You can control a player for about 6.8-6.9 years at this point.
If you're trying to control them for an extra year, a lot of teams will go conservative in year one and keep them down an extra week or two past what was projected as necessary to retain that extra year of control, just to be safe.
Fantasy owners hate it, but I expect both the Cardinals and Rays will do it with Taveras and Myers, respectively.
BTW, I would bet on your guy being more of an instant-impact type. He's a little farther away, but he hasn't shown the swing-and-miss tendencies Myers did last year.
"You gotta love livin', cause dying is a pain in the ass."