The Shrimps’ striker has been side-lined for up to five months with a hamstring injury sustained in July’s pre-season friendly against Burnley.
Obika, who signed for the club last month, underwent a scan following the innocuous injury which revealed the damage was much worse than originally feared.
Despite only being on the pitch for a small amount of time, in an attempt to gain an advantage over an opponent, the 30-year-old ruptured his bicep femoris, the main hamstring located on the outside of the leg.
The forward will undergo an operation this week and, following a lengthy course of treatment and rehabilitation, will aim to be back in contention before Christmas.
Speaking of the injury, Shrimps’ boss Stephen Robinson said: “It is a big blow to us to lose Jon for the length of time, he has been excellent in pre-season and a great boy around the place, we will do everything possible to get him back as quick as possible.
“We have Cole and Jonah in the building as well, so we are in a good place to cover his absence as well.”
The club would like to wish Jon all the best in his recovery, and we look forward to seeing him back out on the pitch where he belongs sooner rather than later.