Jean Michael Seri was a transfer target for Barcelona just 12 months ago, but will now be lining up at Craven Cottage rather than the Camp Nou along with former Nice team-mate Maxime Le Marchand, German World Cup victor Andre Schurrle and Alfie Mawson, who earned an England call-up earlier in the year.
Manuel Pellegrini is one of the best managers in the division, and the former Manchester City boss will be determined to make the 2018-19 campaign a successful one.
"So I hope I'm wrong, but I don't see them challenging for the league this year".
'My view is that first of all is hard for me to believe we finished second when I listen, when I read, not much but sometimes I do, is hard to believe that we finished second because you are capable of making people that finish second look like they were relegated, ' Mourinho said during today's press conference.
I think it'll be tough but if they were to go of the Champions League and they had free weeks after Christmas, Saturday-to-Saturday they could be a real threat this season to City. "I think that's it". The challenge for them is can they repeat that level of energy and that level of focus every three days?
"The information I have is no", Mourinho said at his pre-match press conference when asked if he expected any new arrivals on Thursday.
Here, Sky Sports takes an interactive look at how the competition between the two Manchester clubs has evolved throughout the Premier League era, with City slipping to the third tier before fighting back to overtake their neighbours.
Unlike the big spending summers of the past, Manchester City has only made one significant move thus far in the transfer window, though they were not shy in splashing the cash in the transaction.
City will have to come out of the gate strong, as their first opponent will be Arsenal, looking to impress with their new manager Unai Emery at Emirates Stadium.
Manchester United have a front six of Mata, Lingard, Lukaku, Rashford, Martial and Sanchez. Obscene. In midfield, they've got Matic, Fred and Pogba. "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".