Surely it's better to wait for the right person in the summer (be that zubamendi or someone else) than panic buy a second choice in January?
There's a limit to how much anyone, no matter how good, can influence a season when they arrive mid season. There's no way we're winning the league now so personally I'd prefer our transfer strategy to be more focused on the much bigger, longer term rebuild than trying to save a season that has already gotten away from us. If we can get our preferred targets in Jan then great, but if not I'd prefer to wait.
I appreciate there's a fight for top 4 on our hands but the players we have ought to be good enough for that to be honest.