Eric Bailly only lacks experience at a big club, says Jose Mourinho

Eric Bailly has all the attributes needed to bolster Manchester United's defence next season, manager Jose Mourinho says.

Bailly, who became the Portuguese coach's first signing at Old Trafford club after joining from Villarreal last month, made 47 appearances for the Spanish club last season as they finished fourth and secured a Champions League spot.

"He is a player who we believe has all the attributes. He is very strong physically and very fast," Mourinho, who was unveiled by United on Tuesday, told the club's website.

"It's not so easy to find a fast player when you have quite a big body; he's a heavy guy, a tall boy who's really fast."

The Ivory Coast player, 22, was in a Villarreal back four that conceded only 35 goals in 38 league matches during the 2015-16 campaign and Mourinho is certain he can easily fit at right-back as well as central defence.

Bailly helped Villarreal qualify for the Champions League

"He comes from a Spanish culture where the first phases [of play] are important so technically he's very good," Mourinho added.

"For some periods, he played right-back and, because playing in the right-back position demands more from an attacking point of view - it's good for a centre-back to play some periods as a right-back.

Bailly in action for Villarreal against Atletico Madrid

"My only question mark at the moment is one I have to help him delete - the question mark of someone who has never played at such a big club with so many responsibilities and so many expectations."

Mourinho said he was not sure if Bailly would be ready straight away to play at the level required by United.

"So is Eric ready to come here and start performing from day one? I don't know. It is a question mark but my job is to delete that question mark as soon as possible and give him the stature, brain and personality to play for Manchester United," he said.