Not sure on this one Colin as I really like seeing Stevie next to Lucas where he can both dictate play, and push forward on occasion. But right now, while I do really like JonJo, I find him a bit unpredictable, so think I'd go with Henderson. Another alternative is one Jason has been talking about for a while which is to push Suso into that role rather than playing him wide. Just a thought.
I agree that Gerrard looks better further back these days, he can keep the tempo going and ping long passes for runners. Hendo is the obvious choice, but again I prefer him further back, I guess he Gerrard can take it in turns to push forward like they have in previous games. For me Suso isn't ready for a game of this magnitude. Sterling, Downing and Hendo or whoever plays need to have big games if we are going witness another european miracle. Fingers crossed.