Lars Bender (Bayer Leverkusen)
German international Christoph Kramer will return to Leverkusen at the end of the season, having completed his two-year loan deal with Borussia Monchengladbach, and that could leave Bender on the fringes of the team.
The 25-year-old has been linked with Arsenal and Barcelona in the past – emphasising his quality – while his successful spell as club captain has proved that he has the leadership qualities the Reds will be looking for.