As a captain and senior pro, he gets the nod over Fuchs. Both show great commitment and willingness to tackle but their partnership must be broken up to give Posh any chance of creating a chance, let alone a goal.
The team has been crying out for a link between midfield and attack. You can't play three midfielders who are most comfortable behind the halfway line and expect chances to be created. Grant needs to return from his exile and will be one of those perhaps not as upset at Darren Ferguson's decision to resign as others in the squad.