Key defender Tom Langdon is confident he will be fit for Collingwood's first game of the season against Geelong.
Langdon suffered concussion after the Magpies' final pre-season game against Carlton on Monday, but feels he still has enough time to fully recover.
The 24-year-old has been on restricted duties at training this week but expects to step up his training from next Monday.
He copped a knock during the JLT Community Series against the Blues and believed he had shaken it off until he suffered some concussion symptoms post-match.
Langdon, who still played 80 per cent game time against Carlton and was a strong performer, said: "It was nothing major but a couple of hours later I had a bad headache and felt a bit average.
"There aren't any concerns, though; I'm feeling a lot better and I should be all good by Monday. At least I got it at a time when we've got a week off, so I'll be fine for round one."
Nathan Buckley's side is also expected to feature forwards Jordan De Goey (foot) and Jaidyn Stephenson (groin).
Meanwhile, Essendon forward Joe Daniher will be sidelined for at least five weeks with a calf problem.
Daniher had been progressing strongly in his recovery from an unrelated injury before injuring his calf at training this week.
Bombers general manager of football Dan Richardson said: "Joe remains positive and is committed towards his rehabilitation program as he works towards a return to the senior side early in the upcoming home-and-away season."
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