Tempting offer but I would pass on that deal.
Meggy would be a nice asset to your weakest position on your roster but having to decide between Wilson and Locker from here on out will hurt you in more ways than Meggy can actually help. Wilson has away games in 3 of the next 4 games on schedule and his QB rating in away games is abysmal if you have to rely on him as your starting #2 QB.
Locker has been injured twice this season and his non-throwing shoulder has a huge bullseye stamped all over it for opposing defenses. If Locker goes down again anytime soon, you will have to rely on Wilson and his away game heroics.
I would pass and stay with RGIII.