Would have thought he'd be competing with the likes of Coutinho and Firmino for their natural position in behind the ST? If he is more a winger then yeah you are short of options other than Ibe
He's obviously a very versatile player so I doubt that fitting him in would be an issue whether we played a 4-2-3-1, 4-3-3 or a diamond - having made an offer you'd assume that Klopp would have a role in mind for him. From what I've seen of him he looks to be a bit like Firmino in that he can and has played at #10, #9 and out wide pretty successfully. Pretty clear that Klopp doesn't trust Benteke in the big games at present, and if Sturridge is fit it's obviously a bonus at this stage, so
if we signed Teixeira I imagine it would be with a view to he and Firmino interchanging between #9 and #10 throughout the game with Coutinho floating in that inside left position.
Most important thing with this guy isn't really the position he plays in, it's that he has become very proficient at putting the ball in the back of the net. We need goals, and he's one of the most prolific in that department in Europe at the moment (22 goals in 15 league games so far this season, 26 in 25 in all comps).