Pogue Mahone
Closet Gooner.
I always remember Elokobi getting out-muscled by Nani.
Nani also put Marseille's massive full back on his arse when we played them. Dunno if that means he's incredibly strong or just happened to catch them both off balance. Probably a bit of both.
Rio once tweeted something about Valencia lifting crazy heavy weights in the gym, so the strongest players won't necessarily be the most obvious ones.