United need to invest in a central midfielder to replace club legend Michael Carrick, who will join Mourinho’s coaching team.
Kroos would fit the bill and, having helped Real dominate European football in recent years, may be tempted.
Don Balon say Pogba is aware of United’s eagerness to land Kroos and has been taken aback, fearing he may miss out on a place in Mourinho’s team going forward.
Meanwhile, speaking yesterday, Mourinho expressed a belief that Pogba would stay.
But the United boss was not entirely sure about it.
Man United's Pogba claims he's improving after injury
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Man Utd news: Jose Mourinho wants Toni Kroos from Real Madrid
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"I think he's going to be here next season," he said.
"That's my feeling."
Should Kroos prove unattainable, then Express Sport understands United are monitoring three other players.
Lazio bulldozer Sergej Milinkovic-Savic is on Mourinho’s radar.
And Fred and Jorginho are also tickling Mourinho’s fancy.