Right-back: Alessandro Florenzi (PSG)
Sergino Dest of Barcelona is a talented full-back, but we're going with his PSG counterpart here, as he's more experienced and currently on a better run of form too.
Alessandro Florenzi, the loanee from AS Roma, has a penchant for offensive runs and poses a huge threat with his incredible crossing ability too.
Centre-back: Marquinhos (PSG)
Marquinhos, the long-serving PSG stalwart, is an indomitable force in the heart of the PSG defence and stands right up there amongst the very best.
He was the key to keeping the likes of Messi and Griezmann quiet in the first leg, and more of the same will be expected of him on Wednesday.
Centre-back: Presnel Kimpembe (PSG)
Presnel Kimpembe is enjoying a fine season with PSG and slots in here ahead of his Barcelona counterparts.
He has forged an excellent partnership with Marquinhos, shipping only 17 league goals. But he will have to bring his A-game to the fore once again to help PSG shut out Barcelona's stellar attacking frontline.
Left-back: Jordi Alba (Barcelona)
Like a few other Barcelona players, Jordi Alba has returned to form this season, contributing five goals and 11 assists.
His marauding runs add an extra edge to Barcelona's already fearsome attack. and the likes of Messi and Griezmann will depend on his services once again when the Blaugrana take on PSG.