And ahead of his side's Premier League season opener against Leicester on Friday night, Mourinho addressed reporters' questions about whether United would be getting any late business done on deadline day.
Although there has been speculation about a deal for Tottenham's Toby Alderweireld, there has been no offer from United while Leicester remain determined to retain England worldwide Harry Maguire, who has four years left on his contract.
The transfer window may officially shut at 5pm on Thursday but Blackpool and Fleetwood can still be active in the transfer market thanks to an EFL rule.
Pushed on whether there would be any ins or outs on Thursday, Mourinho added: "The information I have is no (nothing will happen)".
Liverpool have invested heavily over the summer as they look to pose a challenge to last season's runaway champions, Manchester City, but the same can't be said for United.
"My view is that, first of all, is hard for me to believe we finished second", he said.
Sky Sports pundit Gary Neville believes that Liverpool need to exit the Champions League early if they have any chance of winning the Premier League this season.
"So it's hard for me to understand or to feel or to believe that we finished second, which I keep saying that I - and sometimes it's also hard to believe - that I won eight championships and three Premier Leagues".
Colombia defender Mina, who impressed in the World Cup, could eventually cost €31.75million, while Gomes arrives on a season-long loan. "The list of injured players is an important list and, after training, I will speak with that group of [World Cup] players because everybody is different, physically and mentally, to see how they feel they are and to understand how they can help or not help".
'I said during pre-season - it looked like I was saying something absolutely out of order, something insane - but I repeat: pre-season is hard when you don't have your players to work, it's as simple as that'.
Manchester United have been hit by injuries throughout the pre-season tour of the United States and there are plenty of first-team stars that have only just returned from their holidays due to exploits in the World Cup this summer.