Cannon was considered versatile when he was drafted. Some — ahem, me — assumed he would be used at guard as well as tackle, providing depth along the O-line… and maybe being a future starter. And with the team looking at the possible retirement of Brian Waters, some thought Cannon could step in. Instead, Cannon will be in the mix with Nate Solder, Sebastian Vollmer and practice squader Matt Kopa, who is promising. While it hasn’t been said officially, the expectation is that Matt Light will not be back next year (with retirement definitely possible). Cannon is a 6-foot-5, 358-pounder, and the Patriots love his size at tackle. Not at guard. While it seems the Patriots have two starters going into next season — Vollmer and Solder — the season-long injury struggles that Vollmer faced have raised some internal eyebrows. If Vollmer has more ailments, Cannon is a prime candidate to step in.