Scepovic joined Celtic from Spanish club Sporting de Gijon in the summer of 2014 and was expected to be a success in the Scottish Premiership.
However, the Serbia international has struggled for playing time and has failed to make a huge impact when he has been called into action.
Collins understands why the 25-year-old has not played well for the Hoops this season and has some sound advice for him.
"He's got to adapt to Scottish football and his team-mates,” the Scot told BBC Scotland. “Now he knows it's high tempo and he doesn't get time on the ball.”
The fact that Celtic play with one central striker has also not helped Scepovic, who has to compete with John Guidetti, Leigh Griffiths and Anthony Stokes for a place in the starting line-up.
Last week, The Scottish Sun claimed that the 25-year-old is one of a number of players who could leave Celtic in the summer transfer window.
Perhaps Scepovic should be given a second season to prove himself, or least half of it. If the Serbian struggles once again, then Celtic can look to move him on in January 2016.