The most logical answers for Colon, Keisel, and Harrison... and hopefully these will help them re-sign Keenan Lewis.
Steelers have two choices: ask Keisel to take a pay cut that would save the team about $1.8 million or cut him and free up a little more than $2.8 million in cap space.
Harrison counts more than $10 million against the Steelers' 2013 salary cap. If the Steelers restructure his contract they'd only save less than $3 million. So the options are he takes a pay cut or we cut him.
He's scheduled to count $7.6 million against the cap in 2013. If the Steelers release him after the Super Bowl, the team would only save $1.2 million. However, If they waited until after June 1st, they would save a total of $4.425 million toward 2013, but would suffer a penalty of $3.225 million against 2014. There's another option here too, we could restructure his contract that is $5.5 million this year into a $4.5 million signing bonus and save $3 million in cap space.
Steelers 2013 salary cap options - Offensive Line
Cost-Effective Moves the Pittsburgh Steelers Can Make This Offseason