Christian Atsu has joined up with the Black Stars squad after sustaining a knock during Newcastle's Premier League defeat to Bournemouth on Saturday.
Mourinho spent £140m last summer but United did not get the fourth player he wanted and United were outspent by Manchester City.
Romelu Lukaku, 24, endured an evening to forget as Chelsea inflicted a 1-0 defeat on United at Stamford Bridge.
Dier insists he never had his head turned by speculation linking him with a move to Manchester United - despite embracing Mourinho.
Belgian midfielder Marouane Fellaini features on Besiktas' transfer shortlist amid uncertainty over his Manchester United future.
Jose Mourinho is confident that current injured crop are in good positions and can bolster Manchester United's squad for busy festive period.
Gary Neville feels the absence of Paul Pogba and Michael Carrick through injury cost Jose Mourinho's side dearly at Stamford Bridge.
Zlatan Ibrahimovic has not played since April owing to a severe knee injury but Mourinho remains hopeful that he will return in 2017.
Lascelles and Atsu picked up their injuries during Newcastle's 1-0 home defeat by Bournemouth, while Merino has missed his side's last two matches with a back problem.
Chelsea boss Antonio Conte says David Luiz was left out of his squad for the 1-0 victory over Manchester United on Sunday, 5 November, due to "tactical" reasons.
Jose Mourinho has refused to throw in the towel in the Premier League title race after the 1-0 defeat at Chelsea left Manchester United 8 points behind Manchester City.
Alvaro Morata scores the only goal of the game at Stamford Bridge as Chelsea beat Manchester United 1-0 to move just a point behind the Red Devils in the Premier League.
Mourinho, 54, is reported to be frustrated that he has not been offered a new contract by the Red Devils despite winning three trophies last season.
Chelsea signed Morata for a club-record fee of £60m from Real Madrid in July as a replacement for Diego Costa.
Manchester United have failed to score more than two goals since their 4-0 win over Crystal Palace at Old Trafford.
Marseille refused to give a complete assessment of the incident and revealed in a statement that they will interview Evra before deciding upon disciplinary action.
Paul Pogba has been sidelined with a hamstring injury since September but has started training with a return edging closer.
Antonio Conte confirmed that star N'Golo Kante is "progressing well" from his injury but the Chelsea boss refused to confirm whether he will start against Manchester United.
Manchester United manager Jose Mourinho says the "case is closed" after a Spanish tax fraud hearing in Madrid.
Cesc Fabregas is hopeful of agreeing a contract extension with Chelsea as Manchester United boss Jose Mourinho eyes an Old Trafford reunion with midfielder.
Marouane Fellaini has not been selected for the Belgium squad for upcoming friendlies after the Manchester United midfielder's recent injuries.
Lukaku has gone without a goal for United since netting in a 4-0 win over Crystal Palace in September.