One player who could be involved is Alexis Sanchez as Mourinho also confirmed United's latest signing will be involved in the squad against Yeovil but he stopped short of confirming whether the Chilean global would start.
The Chilean has been the talk of the January transfer window, finally making the move to Manchester United on Monday despite long standing beliefs he would actually be moving to the blue side of Manchester.
However, the former Borussia Dortmund playmaker is expected to make his Arsenal bow against Swansea City next Tuesday and he is eager to play alongside World Cup victor Ozil in the north London giants' midfield.
"Now we have five attacking players of quality, Mata, Rashford, Lukaku, Martial, Alexis and it's fantastic for me and for the team, if the players one day are on the bench and they don't like it, I'm happy with that", Mourinho added.
Manager Jose Mourinho has confirmed Sanchez will be part of their travelling squad to face Yeovil in the FA Cup tomorrow evening.
City won't lose sleep over one transfer, however, and now lie 12 points ahead of their city rivals at the summit of the Premier League after 24 matches.
Yeovil Town also known as the Glovers - who played in the Championship in 2013-14 are now 22nd in the fourth tier and haven't won in the league since Boxing Day.
How do you think Alexis Sanchez will fare at Manchester United?
"We were maybe too scared to go for it".
Diego Forlan, one of 15 South Americans to have played for the Red Devils, is excited for Sanchez.
"Could he perform better with us?"
In a statement announcing the news, Mourinho expressed confidence that the high bar of expectations he's already set with Manchester United will continue to be met going forward. Alexis is a very important addition for us.
"He's a player who becomes more than a player, and because of that motivation I think he can play in four different positions". I know him very well for many years. To put some water on the fire, I would say Cristiano is the kind of player that everyone wants, but only one manager can have and only one club can have - Zidane and Real Madrid.