Posh current have a squad of over 40 players, but Johnson has said he has been given the green light to buy before he sells.

BBC: Peterborough United boss eyes up new recruits

The 40-year-old hopes to add extra steel and grit to the current qualities of his Posh squad.

BBC: Posh must battle harder, says boss Mark Cooper

The Scotland B international has been a key player for Posh since signing from Stevenage in 2007, but his current contract will run out in the summer of 2011.

BBC: Nottingham Forest sign Peterborough's George Boyd