Roma president James Pallotta says there is "no chance" the club will sell Alisson at the end of the season.
The 25-year-old goalkeeper has been one of the stars of Roma's season and has been linked with clubs including Real Madrid and Champions League semi-final opponents Liverpool.
The Brazil international still has three years left on his contract, though, and Pallotta has no desire to cash in on a player who cost just €8million in July 2016.
"We have no intention of selling him. No chance," he told Sky Sport Italia.
"When we signed him, I thought he was a great goalkeeper and I still think so, so we won't sell him."
Roma were held to a 0-0 draw in the derby by 10-man Lazio on Sunday, leaving them fourth in the Serie A table, just a point ahead of Inter.
The race for the Champions League spots means they cannot relax their league commitments in order to focus on the semi-final clash with Liverpool, the first leg of which takes place on April 24.
Pallotta, though, is already thinking of the prospect of reaching the final, having watched his side produce a stirring comeback to knock out Barcelona on away goals in the last eight.
"Why shouldn't we think about the final? Liverpool are a strong team but we can play well, too," he said.
"We did well in Barcelona and the score did not reflect what we saw on the pitch in the first leg. We took them by surprise in the second, thanks to the coach."
|Daley´s coming home - Ajax rewrite Three Lions anthem|
|Woods: Open my best chance at winning another major|
|Blind completes Ajax return from Manchester United|
|I belong at the top, says Anderson|
|Leaving Madrid was my biggest regret, Panucci warns Ronaldo|
|Folau in no rush to settle future amid Reds rumours|
|Degenkolb: I need two or three secretaries to manage congratulations!|
|Harrington v Garcia: When winning makes life tougher|
|Mafi and Timani fined by Rebels|
|Watson: Johnson and Woods can prosper at Carnoustie|
|Alderweireld hints at Tottenham departure|
|Maradona takes over as Dynamo Brest chairman|
|The Open 2018: Wounded animal Spieth is a danger to Carnoustie rivals|
|Wests´ Reynolds to miss the rest of 2018|
|Pussy Riot members jailed for World Cup final protest|
|Ronaldo capture boosts Serie A - Mourinho|
|Goals at three World Cups and 50 for the Socceroos – Cahill´s international career in numbers|
|Giroud: It´s coming home|
|Harper wins Home Run Derby in Nationals Park|
|Brighton sign Button from Fulham|
|Bolt set to trial with A-League club Central Coast Mariners|
|Thomas asks Seahawks for extension or trade|
|Walker doubts he´ll join Knicks, wants ´long´ stay at Hornets|
|Socceroos hero Cahill retires from internationals|
|Record income revenue for Barcelona|
|Kudla untroubled as Young bows out in Newport|
|Celtics still hoping to re-sign Smart|
|Villarreal sign highly rated Velez midfielder Caseres|
|Juventus signing Ronaldo should give Milan optimism – Kaka|
|Berrettini masters Mayer in Bastad|
|Manchester United and Ajax agree Daley Blind transfer|
|Familiarity with demands of Real Madrid an advantage – Lopetegui|
|Parmentier rallies to avoid Bucharest exit, Arruabarrena bows out in Gstaad|
|Steelers fail to sign Bell to long-term deal|
|Over 10 per cent of Croatia´s population welcomes World Cup heroes home|
|Thierry Henry quits pundit role to focus on coaching|
|France´s World Cup winners given heroes´ welcome in Paris|
|At the end we will see who is best - Ronaldo sidesteps Messi rivalry|
|Qatar? China? Ronaldo only has eyes for glory at Juventus|
|Proud Kane praises team-mates after Golden Boot win|
|The Open 2018 diary: Is that Tiger Woods? Harrington feels the Burn...|
|Porte targeting Vuelta after Tour de France anguish|
|Maradona madness, #WaistcoatWednesday, bruised Batshuayi - Alternative World Cup awards|
|It could be the best time - Martinez hints at Hazard Chelsea exit|
|England call up Billings as cover for injury doubt Roy|
|McIlroy on track for fitting major haul - Harrington|
|Froome plays down Thomas battle for Sky supremacy|
|Carnoustie record counts for little at The Open, says Fleetwood|
|I don´t see it - Napoli chief De Laurentiis plays down talk of Callejon-Suso swap|
|One or two changes required at Chelsea, says Sarri|
|Monaco confirm Golovin approach|
|Let´s keep making noise! - Serena dedicates Wimbledon run to fellow mothers|
|Full list of Open tee times|
|Fakhar inspires another big Pakistan ODI win|
|Spieth ´annoyed´ by re-watch of 13th hole|
|Kaka claims Ronaldo arrival will boost all Italian clubs|
|Spieth vows to be more artist than tactician in Open defence|
|Conte thanks Chelsea players, staff and fans|
|Rodgers: I´d love to play with the Packers to 40|
|Sevilla insist N´Zonzi will cost €40m|
|Hugill shows mystic powers with accurate World Cup predictions|
|World Cup 2018: FARE ready for post-tournament challenges in Russia|
|Woods grouped with Matsuyama and Knox at Open|
|Matthaus questions idea of French dynasty|
|Chandimal, Sri Lanka coach and manager banned for two Tests and four ODIs|
|Sassuolo demand at least €30m for Berardi|
|French media revels in ´crazy´ triumph|
|Mafi released on bail after alleged assault|
|Bierhoff must go! Berthold calls for Germany changes|
|Joshua to fight Povetkin in September|