Inter manager Luciano Spalletti strongly opposed the Croatian's sale and Mourinho eventually praised the Serie A club's efforts to keep him at the club.
Perisic is delighted to now be in a position to focus his full attention on matters on the field, telling Inter's website: "It's a special day, it's certainly emotional and I'm happy after the stress of this summer".
"But I've got a flawless squad in my hands, and we are going to prove it".
"For a while I did not make any statements, now I can say that with Spalletti we already talked about the preparation, and he told me that with him I could be an even better Ivan".
Speaking to La Gazzetta dello Sport, the boss said: "We were quite clear with him and the club did well too to find the right arguments to convince him to stay".
"Ivan is an impressive sportsman". Given that Inter just did not leave the chances of such teams as Fiorentina and Roma, Spal against their background and does look first-grade.
"The quality of the lads I've got here is really high", he admitted.
Perisic has proven to be one of the most exciting players in the Italian top flight, with no player in the division providing more assists for their teammates last season. But I've got a ideal squad in my hands, and we are going to prove it. There are always a lot fans who turn up and it's better for us like that.
Both The Red Devils and Inter have won all of their opening league games this season.
Rohingya may be deported by India
That also applies equally to Rohingyas who have settled in different parts of the country including Jammu and Kashmir. A party delegation would soon meet the concerned United Nations authorities in India, Basheer said.