I can't see any player coming in in january and making a difference. Anyone above the quality of Shaqiri/Henderson/Keita (rotation players not surefire to be in the best 11) would cost a fortune and would have to adjust to the system and players. I don't think Dybala or Son would even displace any of the front 3 right away, even if affordable. Werner I think could be a good medium/longer term option. Brewster is longer term than that--if he joins now he could help out with cup matches and those with the league in the bag, nothing more. A LONG way to go from big time Liverpool matches no matter what is shown in training--the pressure from here on out will be immense and experience needed.