The Croatia worldwide has been strongly linked with a move to Old Trafford but the Serie A side have no plans to part with their prized asset.
Multiple reports have suggested that the 28-year-old winger has already agreed personal terms to join Manchester United.
But Ausilio stressed that Inter did not need to sell to finance the move and said both Perisic and Candreva - linked with moves to the Premier League - would be staying.
"The same goes for Perisic [no intention of selling him]".
Romelu Lukaku, Victor Lindelof and Nemanja Matic have come in as big-money arrivals to bolster the Red Devils' challenge this time around and Stam - a pillar of defensive strength for Alex Ferguson's all-conquering side between 1998 and 2001 - has been impressed by the recruitment drive.
Managers are now pressing ahead with their plans for the summer transfer window so we'll bring you all the latest news and gossip from around the globe. "He is an important player and we are now discussing a new contract with him".
However, it seems Mourinho is still on the hunt for further reinforcements as he looks to turn United in to genuine title challengers this season while they will also have Champions League football to contend with again.
Mourinho has previously talked about the situation, claiming he could be forced into accepting just three players this summer, but is still hoping the club can complete four. The England worldwide was heavily criticised by his manager last season for his lack of fitness and application but those fears are understood to have been dampened during an impressive pre-season.
So what starting XI do supporters want to see this year? Matic only made his debut in Dublin against Sampdoria on Wednesday [2 August], 11 days before their Premier League opener.