The 32-year-old is being looked at by the Latics, according to journalist Alan Nixon on Twitter.
McCann, who played alongside former Bradford City and Charlton Athletic forward Billy Clarke in the same game for Oldham, is in the hunt for a new club after leaving Major League Soccer side DC United in July.
The experienced midfielder has racked up over 350 appearances so far in his career.
McCann started out in Ireland with Home Farm but moved to England as a youngster to join Burnley in 2004. He went onto become a key player for the Lancashire side and played 268 games for them in all competitions, chipping in with 31 goals along the way.
He helped the Clarets gain promotion to the Premier League in 2009 and stayed at Turf Moor until Wigan Athletic came calling in June 2013.
McCann spent three years at the DW Stadium, one of which was in League One before he moved over to America to sign for Atlanta United in 2016.
Despite briefly returning to England for a loan spell at Coventry City, McCann stayed in America for three years and ended his time there with a six month spell in Washington with DC United alongside Wayne Rooney.
McCann is a vastly experienced player and would bolster Oldham’s midfield options if they choose to offer him a contract.
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