Chelsea ace Baba Rahman spent last season on loan at SchalkeThe left-back has now returned to full training following a lengthy spell on the sidelines with a knee injury.
The Sun say Rahman is impressing Antonio Conte - and the Italian chief could draft him into the first XI.
Conte failed to sign another left-back over the summer and Rahman could now provide competition for Marcos Alosno.
The former Juventus boss is relatively well stocked in central defensive roles, but has only limited cover on the flanks.
Andreas Christensen was brought into the first-team squad after an impressive temporary spell at Borussia Monchengladbach.
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