Kroos has been quoted in the past as saying he would like to play in the Premier League and it growing tired of the constant unrest at Madrid.
United tried to bring the German international to the club near the end of David Moyes’s ill fated reign as manager but were unsuccessful.
It was thought current boss Van Gaal would try to sign Kroos, however the Dutch man immediately indicated he was not interested in the player as soon as he arrived.
This sudden renewed interest in signing Kroos by the United board has raised doubts as to whether or not Van Gaal will be in charge of the club next season.
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