Out-of-favour Matt Mills could be offered a route out of Nottingham Forest, with Championship rivals Barnsley looking to replace Hull City target MacDonald.
Barnsley were beaten 1-0 by Tottenham Hotspur on Tuesday.
The Barnsley defender suggests he wants to follow John Stones and Alfie Mawson into the Premier League - an ambition he'd struggle to fulfil at Norwich.
Winnall left Barnsley to sign for bitter rivals Sheffield Wednesday in January.
HITC Sport understands Premier League and Championship clubs are eyeing the Barnsley defender.
Barnsley defeated Brentford 2-0 over the weekend, thanks to Angus MacDonald's performance at the back.
A former Sunderland youth-teamer and Lucas Radebe's long-term heir: the Championship is the place to be for radio-blocking bargains.
HITC Sport understands Barnsley set to sign non-league defender.