Chelsea defender Branislav Ivanovic is out of tomorrow's match at Portsmouth and could be sidelined for a further five weeks.
He's believed to have suffered a medial ligament injuriy to his right knee against Blackburn Rovers on Sunday.
Chelsea have an full-back injury crisis on their hands.
Alreday Jose Bosingwa is out for the season while left-back Ashley Cole is also struggling to get back before the World Cup in July.
Chelsea will play Paulo Ferreira at right back at Fratton Park with Yury Zhirkov taking the left-back berth.
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