Rochdale boss Steve Eyre insists the four trialists looking to secure contracts at the club must up their game.
Oldham duo Dean Kelly and Jason Jarrett have been released from Boundary Park with immediate effect.
Oldham's Jason Jarrett says he now considers himself a centre-back following his switch from midfield.
Midfielder Jason Jarrett has been rewarded for an impressive trial at Oldham with a six-month contract.
Oldham trialists Jason Jarrett and Rod McDonald could be in line to win contracts at Boundary Park.
Port Vale midfielder Jason Jarrett has moved on from the club following the end of his three-month contract.
Micky Adams is hoping to complete the signing of Lewis Haldane before Saturday's game against Darlington.
Jason Jarrett is waiting to hold talks with Micky Adams to determine if he has a future at Port Vale.
Midfielder Jason Jarrett has been handed a three-month contract with League Two outfit Port Vale.
Brighton & Hove Albion are on the verge of signing Jason Jarrett on a free transfer from Preston.
Bottom of the table QPR entertain third from bottom Norwich City in Monday night's Championship clash, live on Sky Sports 1.
Queens Park Rangers have snapped up Preston midfielder Jason Jarrett on loan.
Paul Simpson has told Jason Jarrett and Adam Nowland that they are free to leave Preston.