BRANDON ZERK-THATCHER will be eligible for selection after sustaining a shoulder sprain in Saturday night's game against Fremantle. 

The defender endured two consecutive knocks to the right shoulder, but was strapped up and managed to play out the game. 

Zerk-Thatcher will have limited contact at training this week but has made positive progress in his recovery since the weekend. 

Travis Boak is hoping to be available for this weekend's Collingwood clash after dealing with a back complaint following a collision in Round 3.

 The 35-year-old missed the win over the Dockers but will be tested as he rejoins full training this week.

 The team for Saturday's game against Collingwood at the MCG will be announced at 5:50pm ACST on Thursday.

Injury list 

Travis Boak (back) - test
Tom McCallum (ankle) - 2-3 weeks
Ollie Lord (knee/tibia) - 3-5 weeks
Hugh Jackson (hip) - 8-10 weeks