The Schalke defender spent the final four months of last season on loan at Liverpool, but the Reds opted against signing him permanently
The defender spent the second half of 2020/21 on loan at Schalke but will not be signing for the German side permanently
Last year's Champions League winners Bayern Munich had their dreams of two-in-a-row shattered by PSG – but how did their defence compare to previous winners?
Quiz A ton of teams will flash up before you - can you remember whether they've ever won Europe's biggest prize, made the final, the semis... or been nowhere near?
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