He will sit out the Saints clash .
The Dons were yesterday dealt another blow after keeper Jamie Langfield lost his appeal against his controversial red card against Killie last week for a foul on Borja Perez .
Jamie Langfield will sit out the Saints clash .
The Dons were yesterday dealt another blow after keeper Jamie Langfield lost his appeal against his controversial red card against Killie last week for a foul on Borja Perez .