Nottingham Forest are holding back from signing Manchester United goalkeeper Dean Henderson over fitness concerns.
Henderson's loan last season ended on the sidelines due to injury.
And The Sun says while Forest are keen to sign him outright, they're seeking assurances over his thigh injury before pushing through a deal.
Indeed, Forest are insisting on a strenuous medical which has United concerned.
United chiefs are refusing to sign off on the tests as there's a belief it risks aggravating Henderson's injury.
Both clubs are now willing to wait until he has fully recovered.