The Fir Park men qualified for the Europa League by finishing second in the Scottish Premier League.
Another nine members of last season's squad have also departed, with Nicky Law now at Rangers and Estonian Henrick Ojamaa now at Polish side Legia Warsaw.
Goalkeeper Darren Randolph also departed for Birmingham while Kallum Higginbotham's loan stint from Huddersfield came to an end and Steven Saunders, Omar Daley, Steven Hetherington, Josh Watt and Nicky Devlin were all released.
But McCall is hopeful of adding several new faces to his squad, and said: "If we get the targets we hope to get in I will be confident we will go on to have a really good season."
- Sports & Recreation
- Michael Higdon
- Scottish Premier League
- Kallum Higginbotham
- Nicky Law
- Tom Hateley