Clashes with the 2nd qualifying round Champions League, 2nd leg according to Bert. http://www.xs4all.nl/~kassiesa/bert/uefa/calendar2008.html
Just not sure if the runners-up in Scotland go straight into the 2nd or 3rd qualifying round?
Edit: looks like 2nd round according to this:
10 Scotland 30.500
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CL1-2=Glasgow Rangers 66.013 (cl/R1)
CL1-2=Celtic 52.013 (cl/QR2)
CW/LC=Queen of the South 11.013 (uc/R1 or QR2)
UC1-2=Motherwell 11.013 (uc/QR2 or R1)
IT=Hibernian 12.013 (it/R2)