Worcestershire hope that captain Brett D’Oliveira will be available when the Championship resumes later this month.
Despite surgery last winter, the 32-year-old all-rounder has been troubled by a persistent shoulder problem, having not played since the T20 Blast game against Derbyshire on 18 July.
“Since the operation he’s had a frozen shoulder which we really couldn’t do much about but he’s now getting in good rehab work,” said Richardson.
“It is now what they call defrosting. It has been painful throughout the season. He’s done an amazing job to get through as much cricket as he has done but It’s an opportunity to put himself in a really good place going into the back end.”