Hasler has included Nathan Tutt and Paul Stephenson to the 17 man side named for the club's last game against St.George Illawarra two weeks ago.
Manly returned from a four day break today and will leave on a two day camp to the Central Coast tomorrow.
Hasler is unlikely to name his final 17 until an hour before kick off on Sunday.
The Manly NRL side for the Cowboys game is: Brett Stewart,Scott Donald,Terry Hill,Ashley Alberts,Chris Hicks,Michael Witt,Michael Monaghan(c),Jason King,Chad Randall,Brent Kite,Steve Menzies,Luke Williamson,Ben Kennedy.Replacements:Sam Harris,Shayne Dunley,Mark Bryant,Kylie Leuluai,Paul Stephenson,Nathan Tutt. (two to be omitted).
The Manly PREMIER League side to play the St.Marys Cougars at Western Weekender Stadium on Saturday is:Mark Lennon,Mitch Creary,Jye Mullane,Jared Taylor,Darren Peachey,Jeff Robson,Travis Burns,Mailangi Styles,Matt Ballin,Phil Moorwood,Kane Cleal,J.P.Cherry(c),A.Cuthbertson.Replacements: K.Johnson,N.Hollingsworth.