Antoine Griezmann says Paul Pogba is in high spirits and has backed the Manchester United midfielder to prove his doubters wrong during France's friendly matches.
A combination of poor form, injury and illness has meant Pogba has started only four of United's last 11 matches in all competitions, while speculation has persisted over a rumoured breakdown in his relationship with manager Jose Mourinho.
France boss Didier Deschamps conceded this week that the 25-year-old "can't be happy" with the way life is going at Old Trafford.
Griezmann, however, insists his team-mate is in a positive mood and expects him to perform well when France face Colombia and Russia in this month's friendlies.
"He came back [to the squad] with a huge smile on his face," Griezmann told a news conference. "He was happy. It's not easy when you don't play at your club or you don't feel at your best. It happened to me and he knows that.
"He still enjoys having fun and working hard, which are what matter the most. It's up to him to prove and show that he's still the player that he can be.
"The coach trusts him, like the entire squad. We need a smiling Paul and an efficient one on the pitch."
Griezmann's own future has again come under scrutiny this week, with the Atletico Madrid star telling L'Equipe he does not want to head into the World Cup without knowing where he will be playing his club football next season.
Barcelona have been heavily linked with a move for the forward but he says it is not certain he will leave Atletico at the end of 2017-18.
"My future will be decided before the World Cup. A while before it," he said. "I said the same to my club and my sister. There are no worries about it.
"I had a complicated start to the season but I am feeling well in Madrid and we are going forward with the club.
"I want to win a title. I think that I can with Atletico. I still have a lot to learn from the coach."
|Boateng not intimidated by supreme athlete Ronaldo|
|McNabb magnificent, Smith a Bengals bust - The last time QBs were drafted 1-2-3|
|Wolff loving battle with Ferrari and Red Bull|
|Heynckes: James was depressed after Real Madrid exit|
|Worry about Ronaldo? Real Madrid should fear Lewandowski, says Heynckes|
|Supporter tensions have affected Wenger - Rice|
|Springboks legend Habana to retire|
|Leinster stalwarts Nacewa and Strauss to retire|
|Germany submits Euro 2024 bid dossier|
|Bulls prop Schoeman given six-week ban for biting|
|Amir to arrive in England after visa delay|
|If Lewandowski wants to go, Bayern will have to let him – Effenberg|
|Leinster and Racing players shortlisted for European award|
|´Goal machine´ Ronaldo more complete than Messi – Kimmich|
|Bayern Munich v Real Madrid: Is this the end of the ´BBC´?|
|Blues chief backs under-fire Umaga|
|Manly fine quartet for Gladstone curfew breach|
|Zidane taking entire Madrid squad to Munich|
|Buffon reaction to Real Madrid penalty ´understandable´ – UEFA president|
|Liverpool owner was ´bitching´ about overpaying for Salah – Roma president|
|The Spanish Inquisition - Bayern´s UCL hoodoo vs LaLiga´s big boys|
|Salah eyes Reds record, Roma´s away-day struggles - Champions League semi-final in Opta numbers|
|Liverpool Salah v Roma Salah: The Opta numbers|
|Jazz, Rockets move closer to Western Conference semis|
|Angels continue road-warrior ways with shut-out win over Astros|
|Raiders exercise fifth-year option on Amari Cooper|
|Bogut says NBA career is over after joining Sydney Kings|
|Dani Alves: I´d return to Barcelona tomorrow|
|No friendly Roma reunion for Salah, warns Klopp|
|Tom Brady´s agent expects Patriots QB to play in 2018|
|Spurs coach Popovich will miss game five against Warriors|
|A total accident – Durant responds to Instagram criticism of Westbrook|
|Horse named after Pats´ Gronkowski out of Kentucky Derby due to illness|
|White Sox pitcher Farquhar ´progressing well´ after brain surgery|
|Started from the bottom now we´re here! Wall says Drake predicted Raptors sweep|
|WATCH: Translator wins Klopp´s approval after lengthy response|
|Super Bowl champions Eagles planning White House visit|
|Swap spaghetti for burgers? Di Francesco not considering Premier League move|
|Allardyce hits back at style critics after scrappy Everton win|
|Nothing to prove - Cahill bullish after Chelsea revival|
|Rybarikova sets up Halep clash in Stuttgart|
|Everton 1 Newcastle United 0: Walcott scuppers Benitez´s century celebrations|
|Everton debut ´virtual mascot´ before Newcastle clash|
|Karlovic wins battle of ATP Tour veterans in Barcelona|
|Salah? I can count on Cengiz Under – Di Francesco|
|Robertson ready for Crucible challenge after being ´hamstrung´ by off-table issues|
|Kings XI hold on for dramatic victory against Daredevils|
|´Shameful´ Bolivian side forfeit match at 7-0 down after fielding youth team|
|Henderson fired up for ´fantastic´ De Rossi battle|
|Klopp urges Liverpool fans to ´show respect´ to Roma|
|Juventus confirm muscle tear for Chiellini|
|Klopp key to surprising Salah success – Totti|
|Hartley to miss South Africa tour with concussion|
|Salah´s PFA award made more special by De Bruyne form – Klopp|
|Liverpool have earned the right to be feared, says Gerrard|
|Arsenal confirm ankle ligament damage for Elneny|
|Cubs´ Kris Bryant ´as good as can be expected´ after being hit with 96 mph fastball|
|Hector pledges future to struggling Cologne|
|´Crazy´ fans can help Roma knock out Liverpool, says Voller|
|Sharapova not short on desire despite struggles|
|South Africa to test unbeaten home record vs Pakistan & Sri Lanka|
|Kerr: Ginobili should keep playing another two years|
|He keeps getting better and better - Henderson full of praise for PFA winner Salah|
|Roma v Liverpool: Giallorossi have chance to write positive headlines|
|Prove you are the best - Povetkin promoter lays down Joshua gauntlet|
|Wenger will not be short of offers from clubs - Dein|
|LeBron hails Korver & Clarkson as Cavs square series|
|I may play the kids in the FA Cup next season, reveals bemused Pochettino|
|Simeone weighing up three-man defence for Arsenal tie|
|Kings wait for Bogut signing approval|