I may be in the minority but I don't think defence is our main issue.
When Coleman and Baines return we can get some balance and experience back into the side and then in the summer we look for a replacement for Baines and one more tall, dominant centre half. Baines becomes a 2nd choice full back, as does Kenny and Jags moves on. Leaving Holgate, Keane, Williams, Mori and A.N.Other. We can move one of Mori and Williams on and with Pickford in goal I don't think that looks bad at all.
My main concern is and has been for the past year the centre of the park.
I agree and despite having about 12 midfielders we need a creative one as otherwise we just give away possession going forward . Out of possession we leave the defence exposed through the middle despite the presence of Gana . Looked better with Rooney in the middle as he is creative going forward until he tires but long term I agree the middle is the issue .