Dean Saunders says Doncaster are still investigating accusations that El-Hadji Diouf was out clubbing in Bournemouth, just hours before his side's 2-0 defeat at league leaders Southampton..
Photos released on the internet appear to show the striker at a nightclub in the South Coast town ahead of the clash at St Marys.
Diouf has scored six goals in 22 appearances since moving to relegation-threatened Doncaster in October, but his goals will not stop his manager from fully investigating the incident.
"I've made some inquiries and I've asked him about it and he denies he was there," Saunders said.
"It's still ongoing and I want to get to the bottom of it. It's something I can't comprehend if it is true."