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Brendan Rodgers, Derek McInnes, Alan Archibald and Jim Duffy are Scotland's managers' chosen four

Scotland's managers have nominated Aberdeen's Derek McInnes, Brendan Rodgers of Celtic, Partick Thistle's Alan Archibald and Morton's Jim Duffy for the manager of the year award.

Duffy is the only nominee from outside the Premiership, having led the Ton to the play-offs and the League Cup semis.

Rodgers is targeting the domestic treble in his first season in Scotland.

McInnes's Dons have reached two cup finals and are second in the league, while Thistle achieved a top-six spot.

For the second successive season, Derek McInnes has steered Aberdeen to second place in the Premiership and also reached the finals of the two cup competitions. The Dons lost to Celtic in the League Cup final, and face the same opponents in this season's Scottish Cup final

Celtic manager Brendan Rodgers is a chasing a potential domestic treble in his debut season at the club

Alan Archibald - currently the longest-serving manager in the Premiership - has guided Partick Thistle to a guaranteed top six finish, their highest-ever placing in the new-look SPFL

Jim Duffy has led his Morton to this season's Championship play-offs as well as the League Cup semi-finals, where they lost out to Aberdeen

Leigh Griffiths on Brendan Rodgers: "He's very straight down the line..."

Celtic striker Leigh Griffiths praised Rodgers for his "exceptional" man-management skills, adding: "he's different to what I've had before.

"He's very straight down the line. He tells you why you're not playing. His attention to detail in everything we do [was evident] from the first day he came in.

"We have progressed as a team and grown in stature and we're showing everyone what we're all about now. The only way we're going to go is forward."

Griffiths added: "If I had to choose one of the other three, I'd go for Alan Archibald.

"His Thistle team came here a few weeks ago and played really well to get a point. With the chances they had, they could maybe have won the game.

"With the budget they have and the way they are playing, they deserve to be in the top six."

The winner will be announced at PFA Scotland's annual awards dinner in Glasgow on Sunday.