Oldham boss Richie Wellens believes his side's late victory at Scunthorpe shows the level of belief currently in the Latics squad.
Two goals in the final 12 minutes saw Oldham climb out of the League One relegation zone with a 2-0 victory at Scunthorpe.
Scunthorpe pair Lee Novak and Ivan Toney could return to contention for the home game against Oldham.
Oldham's attacking midfielder Patrick McEleney is in contention for his debut against Southend after recovering from injury.
Football agent Abdallah Lemsagam's proposed takeover of Oldham has moved closer, according to the Sky Bet League One club.
Rotherham manager Paul Warne was content to leave Oldham with a point after a 1-1 draw at Boundary Park.
Ben Pringle has joined Sky Bet League One strugglers Oldham on loan until the end of the season.