Boyd, Sam Hutchinson and Tom Lees will all miss Sheffield Wednesday's game against Hull City this weekend.
Sheffield Wednesday will face Derby County in the Championship this weekend.
Summer signing Boyd has started just three times since moving to Sheffield Wednesday.
Sheffield Wednesday were without a number of key players against Brentford.
Sheffield Wednesday host Sunderland in the Championship this evening.
The former Middlesbrough boss has had his say on Sheffield Wednesday and Sunderland's forthcoming campaigns.
Pedro Caixinha’s Glasgow Rangers will face Sheffield Wednesday at the Hillsborough Stadium on Sunday.
Sheffield Wednesday won against Mansfield Town in a pre-season friendly on Saturday.
Following the expiration of his contract at Burnley, who wanted to keep him, the former Peterborough United man signed for Wednesday.
Sheffield Wednesday have already been credited with interest in the West Ham United star.