27-year old Zubar had been at the club for past week and featured started in the U-21's match last night which ended in a 3-1defeat against Colchester United last night.
Manager Steve Davis told the official website "He's been been good enought to come up here and have a short trial with us and has been very good round the place"
Zubar returns to his parent club Bournemouth where he is in the last year of his contract with the Cherries.