Michael Essien's latest injury is a dreadful blow to the player that is arguably the best defensive midfielder in the English Premier League and European football.
Sustaining a long-term injury at any time is a terrible misfortune for a player, but the timing of Essien's latest knee problem could not be worse.
With newly appointed Chelsea boss Andre Villas-Boas looking to establish a new system and setup for the Blues, it would have been beneficial for Essien to have been there from its off. If Villas-Boas's new-look Chelsea get off to a flying start, he may well be loathed to tinker with it.
Essien's latest injury is a rupture of the interior cruciate ligament and meniscus, and, although successfully operated on, will leave the midfielder out for six months.
Although Chelsea have not delved into the transfer market to find a suitable replacement for Essien, here are 12 players that should be in their sights if they decide to do so.