Tottenham Hotspur finally announced Ndombele as a club record signing yesterday, with the BBC reporting that the Lyon midfielder joined on an initial fee of £53.8m.
However, ex-Liverpool defender Steve Nicol believes this may cause one key issue for Pochettino at Spurs.
Moussa Sissoko was one of the club’s players of the season last campaign, but Nicol claims that Poch won’t be able to play the two Frenchmen together as they are too similar in terms of style.
He said (ESPN): “The only player I can think of that dribbles out of the middle of the park in the Premier League is actually Sissoko.
“I don’t think you can have two players [who do the same], if indeed he joins Spurs. That’s going to be a problem. You have to have a mix.
“At the same time, I’d say that this is a big strong physical player [in Ndombele] who definitely can get around the field.
“Right now I think that’s what lacking a bit defensively for Tottenham.
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“The opposition in my opinion whether it be in the Premier League or the Champions League have gotten to Tottenham’s back-line far too easily.
“Again, this guy stepping in would make a difference that way. What I like about him, he’s nice and tight.
“When he goes to close the ball down, he does it properly. He’s always close enough where if the opposition mis-control the ball, he can go and get it and his team are on the attack.
“Those two players in front of the back four, that’s what they’re there for.
“Yes you want them to start attacks but primarily they’re there to be solid and more defensive than anything else.
“I think it’s a positive move, I think the guy’s a good player. I think the guy is as good as what they’ve got, so it has to be positive.”