The 25-year-old is best remembered for his role in the Tranmere cup-run teams of past. The pacy wideman was often key in the scalping of Premiership teams.
After seven years on Merseyside, Parkinson moved to Sheffield United last summer but failed to make a serious first team impact under Neil Warnock. He ended the season on loan at Notts County.
Comfortable on either wing or just off the frontman, Parkinson has pace to burn and fits in well with Russell Slade's plans for a big and fast team to take on League Two.