Allison/De Gea - can't go wrong with either really
TAA, Maguire, VVD, Robertson
Fabinho, Pogba
Salah, Firmino, Mane
Martial
De Gea even during his best wasn't nearly as good as Allison, and De Gea these days is a shadow of himself, so he's miles behind Allison. Did you even notice that De Gea lost his starting position, in the Spain squad, to Kepa? Nobody in their sane mind would prefer De Gea to in-form Allison.
Henderson and Wijnaldum are in a better form than Pogba. Liverpool has no need for Pogba, right now. Maybe potentially, if he moved into Liverpool squad, after several months he'd show the talent his fanatics have faith in, but right now - nobody would pick Pogba over midfielders that Liverpool has.
Martial? Seriously? For one, Liverpool doesn't play 4-2-3-1, and secondly, who needs Martial when you have Salah, Firmino and Mane up front? Seriously? He'd be just getting in their way.
Let's face it - the only player we have that Liverpool would even consider is Maguire. And since he's kinda VVD-light, it actually may make sense to prefer VVD-Matip pair over Maguire. Either way - nobody else would even get a consideration. AWB is the only other great player but Liverpool already has TAA so they don't need AWB. TAA is better in attack.