Zakaria is said to be a target for a host of European clubs but Man United are the frontrunners, according to Sky Germany (via the Daily Star).
The Swiss international is reportedly attracting interest from Atletico Madrid, Borussia Dortmund and even United's biggest rivals Liverpool.
Borussia Monchengladbach are keen to keep hold of the 23-year-old as he is seen as a key cog in the heart of the side's midfield.
"I think that there is a very good chance that Denis will still be with us next year if we qualify for the Champions League," sporting director Max Eberl recently said.
"At some stage you’re going to need a little bit more quality," Richards said on Sky Sports.
"We mentioned bridging the gap - these players have done well and they’re probably an easy group to manage.
"But if they want to be competing, they’re going to have to buy a little bit more quality."
"We feel we are improving all the time," Solskjaer told the media
"We know we lack one, two, three players to be considered a title contender and some experience.
"We are just going to start talking about going up the table, getting more points."
