Mourinho jokes that he's prepared to play in defence for United against Swansea.

Manchester United manager, Jose Mourinho has joked that his squad is so depleted that he might have to play against Swansea on Sunday.

The selection problem was worsen after Marouane Fellaini was sent off and Timothy Fosu-Mensah suffered an arm injury against Manchester City.

The Red Devils are currently without Zlatan Ibrahimovic, Marcos Rojo, Juan Mata, Chris Smalling and Phil Jones and Fellaini is likely to face a three-match domestic ban, which will rule him out of the game against Swansea at Old Trafford, plus the trips to Arsenal and Tottenham.

United boss expects Paul Pogba to be fit for the Europa League semifinal first leg with Celta Vigo next Thursday, meaning Wayne Rooney could play in midfield against Swansea.

"Yes, he's an option," Mourinho told a news conference. "We don't have [any other players there]. We have [Ander] Herrera and [Michael] Carrick and nothing else. And Tim Fosu-Mensah -- an emergency to help the team, strong legs, energy -- he's another one that we will miss so we are in trouble but we will fight, that's for sure.

"In this moment Eric Bailly is the only option we have [at centre-back]. It's Axel [Tuanzebe], Eric and Daley [Blind]. I think Eric and Daley, they played again absolutely amazingly [against City].

"I have to speak with them and see how they are, see how they feel. I'm also training hard in the gym so I can also be an option -- Mourinho and Tuanzebe against Swansea!

Mourinho says Juan Mata is the closest to return, among those that have been out of action due to injuries.

Mata has missed the last eight games after undergoing groin surgery but said last week he hoped to play again this season.

However, despite good news on Mata, Mourinho insisted again it was more important that either Jones or Smalling made themselves available.

"I think the first one to come back is Mata, which will give us another option in attack, but in reality what we need now is one of the two centre-backs to be back," Mourinho said.

"We arrive in an extreme situation where, I think it must be unique in football, where we have two cruciate ligaments in the same match [Ibrahimovic and Rojo against Anderlecht]. In my career I had one in 17 years. One cruciate in 17 years. And now, against Anderlecht, I have two. In one match. We are very unlucky is the only thing we can say.

"Smalling and Jones were [injured] with the English national team, training. So maybe it's a blessing, an opportunity to make the team stronger, maybe it's an opportunity to make them mentally stronger. Maybe it's a blessing, so let's see if they can come back."

With Fellaini suspended and Pogba injured, United head into the game against Swansea with just Herrera and Carrick as first-team central midfielders.

Mourinho also insisted he didn’t made a mistake in selling Morgan Schneiderlin to Everton in January, claiming the midfielder wanted to leave.

"We didn't tell Morgan, 'we want to sell you,'" Mourinho said. "Morgan asked and said, 'please sell me, I want to go and play every game.' So sometimes there is always this dilemma of keep a bigger squad, but then the players don't want to stay."