Huh, wow, I never noticed that. Great point.
Desmond Jennings put up 3.3 WAR with a .314 BA in 2012. Ben Revere put up 3.1 wins with an 88 wRC+. Shane Victorino puts up quite a bit of value with some OBPs under .300.
If he can have a ~.300 OBP player he'll put up at least 2.5 WAR, I'd bet.