Sky Sports understands midfielder Eugen Bopp is currently on trial at Scunthorpe United.
Scunthorpe manager Alan Knill could hand German midfielder Eugen Bopp a route back into English football.
Portsmouth have rejected a bid for Sylvain Distin and insist the defender is staying at Fratton Park.
Portsmouth have taken Cameroon international Modeste M'bami on trial.
Crewe defender Danny Woodards is set to leave the club after turning down a new contract offer.
Crewe midfielder Eugen Bopp looks likely to miss the rest of the season through injury
Steve Holland "remains hopeful" that the lure of first-team football will be enough to keep Owain fon Williams at Crewe.
Crewe have made Eugen Bopp available for a free transfer, just a few months after signing the midfielder.
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