Collingwood pair Will Kelly and Reef McInnes have both potentially suffered injuries at training on Monday.
AFL Media's Callum Twomey reported on Twitter that Kelly left the session early grabbing his calf, while McInnes had scans for a finger injury.
Kelly was drafted to the Pies as a father-son selection in 2018 and made his debut for the club last season.
However, he suffered a dislocated shoulder during the contest which sidelined him for the rest of the season.
McInnes was tied to Collingwood through the Next Generation Academy program and was drafted with Pick 23 in last year's draft.
It comes after it was revealed last week that defender Mark Keane will be sidelined for up to two months after undergoing finger tendon surgery.