Messi stunned Barcelona last month by telling them that he wanted to leave Camp Nou.
City were favourites to land the Argentine following his request to leave Barcelona, while reports had even claimed that Pep Guardiola had spoken to the 33-year-old about a move to the Etihad Stadium.
City Football Group (CFG) had also reportedly offered Messi a five-year contract worth £623 million (€700m) to play for City for three seasons before moving to New York City in Major League Soccer.
However, Messi reversed his decision to leave Barcelona last week and confirmed he would be staying at Camp Nou for at least another season.
And following Messi’s decision to stay, Mourinho has aimed a swipe at City for making a move as he claimed any club who wanted to sign the Argentine ‘doesn’t respect Financial Fair Play’.
Asked if he would like to sign Messi, Mourinho told Joe in a promotional video for Top Eleven: ‘For my Top Eleven team?
‘No, not for Tottenham. Just for Top Eleven.
‘He can only go to a team that doesn’t respect Financial Fair Play, so it’s not Tottenham, for sure.’