Liverpool defender Kostas Tsimikas faces a lengthy spell out after he suffered a broken collarbone during their 1-1 draw with Arsenal at Anfield.
The Greece left-back landed awkwardly after a touchline coming together with Bukayo Saka and his momentum saw him knock over Reds boss Jurgen Klopp.
Liverpool's first-choice left-back Andy Robertson is already out injured.
Klopp told Sky Sports that Tsimikas' collarbone was "definitely broken" and "he is out for a long time".
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Robertson sustained a shoulder injury that required surgery while on Scotland duty in October and is not expected to return until next month at the earliest.