By Ewan Murray Liverpool return to Europa League action on Thursday night when they travel to the Czech Republic to face Sparta Prague in the last 16. The first leg between the two sides will take place at the epet Arena, with the Reds wanting to take an advantage back to Anfield in a week’s time. However, with injuries still wreaking havoc on Jurgen Klopp’s squad and a crunch clash with title rivals Manchester City this Sunday, Liverpool may not be at full strength for their trip to Prague. The Reds have won their last six games in all competitions, most recently snatching a 1-0 victory at No…