Carpenter won't be a free agent until his age 31 season. Dingler is under team control through his age 32 season. I wouldn't bother extending either. Most guys who start late tend to fade pretty rapidly by age 32 or so anyway. The only guy currently on the roster (not named Skubal) worth an extension is Greene, who will be a FA as a 28-year old. I suspect, however, that window may have closed. Greene has little incentive to agree to a long-term deal unless it's comparable to what Vlad Jr. received. And I doubt the Tigers want to commit to Greene into his late 30s.