The news will come as a light relief to Gianfranco Zola, as it makes it likely that Collison will get to play some part in the final run-in as the Hammers chase a European place.
Collision twisted his right knee as he went to control a ball on his chest in West Ham's 0-1 victory against Wigan only three days after fellow midfielder Valon Behrami suffered anterior cruciate ligament damage against