Ralf Rangnick's terms for Man Utd signing players already clear amid Denis Zakaria links
Zakaria, whose deal with the Bundesliga club expires in June, is now free to negotiate pre-contract agreement with other clubs and Rangnick's side are desperate for a defensive midfielder just like him.
But Rangnick, who will leave the Old Trafford dugout at the end of the season to take up a consultancy role, knows exactly what the 25-year-old must offer in order to be signed by United.
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"My opinion on winter transfers is clear," the acclaimed German coach explained to reporters in December. "It needs to be a player who improves the quality, who improves the team to get better, it needs to be a high-quality player, no matter in which area of the pitch.
"If it's a midfielder or whatever it is, it needs to be a player who really helps us to get better. And on the other hand, it needs to be a player, in case we would want him in the summer and he should be available for similar conditions in the winter, then it might make sense to discuss it and to have thoughts about that.
"But only then, if those two things come together. And it needs to be the right mentality, not only the right quality. We also need, especially for this competitive league, to have the best possible mentality.
"They need to be mature enough, have a winning mentality. For me, the mentality in this league is even more crucial than in any other league in the world."
Zakaria is reportedly on a number of top clubs' transfer radar, having starred for Gladbach in almost 150 games since joining from Swiss giants Young Boys in 2017.
The 6ft 3in dynamo can operate well in various systems, with a superb defensive nous perfectly complimenting his ability on the ball.
Rangnick will know all about Zakaria's well-rounded attributes, having worked in the Bundesliga with RB Leipzig as manager and sporting director until 2019.
The Switzerland international will certainly be missed when he leaves Borussia Park but Zakaria remains undecided on his next destination.