We certainly need another centre. There's no competition, we have really 2, Gelling and Gildart. Neither are world beaters to say the least. One is little more than a kid and the other has moment of excellence and moments of madness.
In light of Charnley, I'd sooner look to another ex Wigan player, Dan Sarg. He's a better FB than Escare and would increase competition for places in the centre.
Personally Ratchford is someone I've always wanted at Wigan, he'd still be a good signing for us, can play anywhere from 1-7 and fill in at 9.
But I agree, a 7 is a must. Personally, with no exaggeration, I honestly believe Tommy is the worse 7 in SL.