Maguire has impressed since joining Old Trafford, but the loss of form and fitness of Eric Bailly and Victor Lindelof at various points in the campaign has left the feeling that United could be even stronger in this area.
And Yorke thinks United should prioritize signing Koulibaly, with rivals Liverpool and Manchester City also expected to follow the defender.
The Trinidadian said at the Astro Stadium: “Without a doubt, I think this is the one everyone is looking for and if United is going to make great signings as they always do, I would no doubt do it [sign him], if we can allow it then why not?
“I think he is the ideal person to enter the center center alongside Maguire, it would be great to have him there and suddenly we have a good team, with tastes of [Paul] Pogba and Bruno [Fernandes] and one of the holding midfielders and the three forward forward.
“We are becoming a team that everyone will suddenly fear.
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“The Italian league for me was the best league, it’s very difficult. But certainly with everyone after him, what he has done in the Italian league so far is a name that everyone is looking for. ”
“If there is one that everyone is looking for, then why shouldn’t United pursue him?”
“And it sends a clear message that we are hard to beat and certainly with the quality we have by the minute, to me it’s kind of a no-brainer if I was United at this point, or if I was Ole or in Ole’s position, I would be persuaded to do it because I know how much [it is] to have another quality semi-center alongside Maguire. ”