On the way to the CL final, check how many games Gerrard missed. He is often not the central player although his role is often amplified. Alonso is a more influential and consistent performer. However not many people strike the ball as well as Gerrard that is why I would play him at the top of a midfield diamond. The Ljunberg role when Arsenal played in Europe last season- just behind the lone striker.
Gerrard, just like many england big names are not great at holding and distributing. It's not about pace. leave that to the wingers