There were scenes of celebration on Saturday as the Reds ended a 15-year wait by bringing the trophy back to Solitude for the first time since 1998.
They had sealed the championship a few weeks earlier, but a hard-fought 2-1 victory over Ballinamallard on the final day capped off an impressive season which saw them finish on 91 points with just one home defeat.
However for Breslin, who supports recently crowned Premier League champions Manchester United, the icing on the cake came when he received a special letter from Sir Alex.
"On Friday night, I came home and there was a letter from Sir Alex Ferguson," he beamed.
"I have a friend over at Manchester United and he obviously took the time out to write to me and wish us all the best for an exceptional season.
"You could have knocked me down with a feather - when Sir Alex writes, it doesn't get any better. But really appreciative that he took the time and, as I say, I am so proud that he took the time."
With the Irn Bru league cup and the Dankse Bank premiership secured, Breslin said his attention will now turn to making history at Cliftonville by beating Glentoran in the Irish Cup this weekend to complete the treble.
And there's been no let-up for the players who've been putting in extra training sessions this week ahead of the big game.
"We normally have two, but it's just over the last couple of weeks we have had midweek matches and that sort of curtailed training," he continued.
"Yes, we take every team seriously and Glentoran will be no exception, so they are in an extra night tonight - primarily because they had an awards do on Saturday, so we need to sweat a few boys out and as I say we will take them seriously and whatever will be will be on Saturday."