Based on the bits and pieces I've seen and read, it seems like he's a bit of a Milner type of player - can play anywhere in midfield.
I'm not sure what to make of our signings/potential signings tbh. We've already got Grujic signed then with Zielinski and potentially Gotze arriving we're looking really heavy in midfield/central attacking midfield but still short of wingers - something Klopp mentioned previously. I'm not one to write a young player off but it looks like Ibe will become another SWP/Lennon - he's got the ability but I'm not sure he's got the brain to be a top class player. It wouldn't surprise me if he leaves this summer and while I don't think it's probable, I wouldn't be surprised if Henderson left too.
I agree with omnomnom, if we do indeed sign Gotze then I don't think we'll be signing a striker (even with Benteke leaving) and Firmino will mainly play up front.
edit: On Lallana - previously I've thought that his place in the squad could be under threat but the more the season has gone on the more you can see that Klopp rates him. Klopp usually makes a point of not singling 1 player out for praise but on a few occasions he's made a point of talking up Lallana's importance to the side.