Internazionale have named Ivan Perisic in their squad for the club's pre-season tour of China, as they still haven't struck a deal with Manchester United over the fee for the 28-year-old Croatian global.
Asked for an update on the transfer after the 2-1 friendly win at Real Salt Lake, Mourinho said as he left the press conference: "No idea".
Jose Mourinho has already signed centre-back Victor Lindelof from Benfica while Belgian global striker Romelu Lukaku has arrived from Everton but the United boss is still looking to further strengthen his squad.
Perisic has travelled with Inter to China for their preseason tour of Asia, amidst speculation that he still wants to join United, but while Spalletti stated he could still count on the Croat, he vowed not to "lie" to the fans.
The Croatian is said to be desperate to make the move to Old Trafford and may have to wait longer as both clubs negotiate a deal, which is a shame because he'll miss out on Man United's tour. No idea my friend.
It has been a long-running saga, with Inter refusing to let Perisic go on the cheap, but now the deal looks close to being finalised.
The former Borussia Dortmund and Wolfsburg winger is set to become United's third major signing of the summer and take Jose Mourinho's spending to £150million following the arrival of Lukaku and Lindelof.
While this latest development comes as a setback for Jose Mourinho and his side, it is still widely expected that they will eventually land their target this summer.