I haven't seen any update on Mourinho's decision. Are you sure that his decision is final? Because a few days ago I read that he would be okay to stay longer but he said that he would inform the board if he gets an offer from PSG as well. This must be still the same now. Because PSG are about to sack Galtier and Mourinho is a strong candidate for now.
If PSG make an offer for Mourinho then I'm not so sure about if he would like to stay with Roma instead. Because while he can win titles easier with PSG why would he want to continue with Roma and struggle more, right?
Regarding with how much money spent by Jose Mourinho since become AS Roma head coach not really bad his achievement by winning Conference League tittle last season and success lead to Europe League final stage although defeated by Sevilla. I don't sure Jose Mourinho loyal with AS Roma and extend until his contract expiry because he has low budget for transfer player.
Can't compete in domestic league for finish on top fourth standings placed without have star player, I think AS Roma's management should give much money for Jose Mourinho signing new player for next season or possibility for Mourinho accepted PSG offering. Have rumor about Galtier not extend for PSG manager next season and chance for Jose Mourinho for replacing Galtier position.