He already screwed it up with Penske once.
In Indy? Maybe, probably not with Penske though. In NASCAR? No way, again not with Penske. He's got a reigning champion in the 2 and Logano is outperforming his efforts so far in the 22.
I think he's a decent driver, but unless he gets welcomed back with open arms to NASCAR, his future is in ALMS or some form of road racing. He won't get a decent drive in NASCAR or Indy because he messed up.
It's a shame, but it's how it is.