If...IF the Jays do move him off SS this season I see it happening as part of an injury. Probably something like, pulled hammy or quad, he goes on the DL...Semien moves over and gets comfortable... He comes back after a short minor league rehab at 2B, the team puts him at 2B and provides some garbage excuse as to why he moved to 2B. They won't do it as a 'You're not good enough, get your ass to 2B' scenario.