We probably will loan Thompson out at some point. But, the pertinent point is that we shouldn't go out and buy a central defender just to sit on the bench, which is what you're doing if you're signing a 4th choice CB. We should be looking at strengthing the Starting XI now we have the depth in our squad, so signing substitutes are pointless and it's a solution that is the worse of both worlds: he's neither good enough to improve the team, yet, he's pushing younger players like Morgan and Thompson further down the pecking order.
Right now, the depth in our squad is good. A left-footed or sided winger is perhaps on the shopping list, but we've got Jones, Hiwula is in-form and Allassani out on loan. If Thomas doesn't renew his loan, then a right midfielder will probably be needed.