James Wesolowski serves the final game of a three-match suspension, while fellow midfielder and captain Dean Furman remains on international duty with South Africa at the African Nations Cup.
Winger Cristian Montano will be out for around two months with a torn thigh muscle.
Either side of their FA Cup third-round heroics at Nottingham Forest, Dickov's men have experienced a dismal run of league form.
Their last six games have garnered a solitary point - a 2-2 draw at Scunthorpe on New Year's Day - and Latics head to the Ricoh Arena four points above the relegation zone.
Coventry were 1-0 winners at Boundary Park earlier this season after Cody McDonald struck the winner a minute from time.