United recruit goalkeeper Stryjek

The Polish youth international (18) has joined the Pilgrims on an initial youth loan arrangement and is eligible to make his debut against Harrogate Town on Saturday.

Stryjek will become the sixth on-loan Sunderland player to appear for Dennis Greene's side over the last season-and-a-half.

Winger Massiah McDonald, meanwhile, has returned to Alfreton Town at the completion of his month's loan at The Jakemans Stadium.