Jordan Henderson (Central midfield) – Henderson was rested against Southampton as Klopp attempts to properly manage his return from injury. With Emre Can suspended for the trip to Portugal, Liverpool pass master Henderson must replace him. Henderson for Can.
James Milner (Central midfield) – Milner was a substitute against Southampton, but must be drafted in against Porto. In European away games like this, a solid midfield is essential, and a Milner-Henderson axis provides Liverpool with a really solid base. Milner for Giorginio Wijnaldum.
Alex Oxlade-Chamberlain (Central midfield) – The former Arsenal man is showing exactly why he sees himself as a central midfielder, and the departure of Coutinho has left him with a big opportunity to shine for the Reds. Oxlade-Chamberlain must start in a midfield trio with Milner and Henderson, but must be deployed slightly further forward in order to link up with their front three. Retains his place.
Click below to see who should start in attack