Despite being one of their most high-profile summer arrivals, Kalidou Koulibaly is yet to feature under new Chelsea boss Graham Potter. An ever-present earlier in the season under Thomas Tuchel, the Senegalese centre-back has been an unused substitute in both of Potter's games so far.
The 47-year-old used a back three against RB Salzburg and a back four against Crystal Palace, but the likes of Thiago Silva, Wesley Fofana and Marc Cucurella have been selected over Koulibaly in those games. It remains to be seen whether the 30-year-old features in the Blues' crucial Champions League match against AC Milan on Wednesday evening.
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