HITC Sport understands Wigan striker is a target for Oldham.
Northern Ireland international McKay is back at Wigan after spending last season on loan at Dundee United.
McKay is unlikely to figure in Wigan boss Gary Caldwell's plans next season following the club's promotion back to the Championship and the news has alerted a number of sides.
League One team Oldham are keen to secure McKay with new Latics boss Steve Robinson well aware of the striker having worked with him in the Northern Ireland set-up.
Robinson is desperate to bolster his threadbare squad at Oldham and he sees McKay as the man to score the goals that will ensure Oldham avoid a relegation fight next season.
McKay scored 13 goals in 35 appearances for Dundee United last season, despite the Tannadice club's struggles in suffering relegation from the Scottish Premiership.
Wigan signed McKay in January 2015 after the striker's impressive goal-scoring rate in Scotland with Inverness Caledonian Thistle
Mckay, who started his career with Leicester City, scored 62 goals in four years with Inverness after leaving Northampton Town in 2011.