Danny Lennon has a full squad to choose from as he hopes to lead the club to their highest Scottish Premiership finish in 25 years.
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The Buddies face Kilmarnock at Rugby Park on Tuesday ahead of their final fixture of the campaign at home to Hearts on Saturday.
Saints sit seventh, three points ahead of Hibernian and Partick, and will hope to finish the campaign without defeat as they look to match the feats of their 1988-89 squad.
Kilmarnock manager Allan Johnston says he no fresh injury problems for their crucial Scottish Premiership clash with St Mirren.
Killie need to win to get out of the relegation play-off position ahead of their final match of the season.
Long-term absentees Greg Kiltie (ankle) and Darren Barr (hip) are missing again.
Kilmarnock (from): Samson, O'Hara, Ashcroft, Pascali, Tesselaar, Johnston, Irvine, Moberg Karlsson, Nicholson, Slater, Eremenko, McKenzie, Boyd, Muirhead, Fowler, Gros, Gardyne, Barbour, Clohessy, Maksimenko, Clingan, Reguero.
St Mirren (from): Kello, Dilo, Naismith, Kelly, Newton, McGregor, McAusland, McLean, Goodwin, Thompson, McGowan, McGinn, van Zanten, Campbell, Magennis, Teale, Wylde, Djemba-Djemba.