After three more substitute appearances over the next couple of months, Bailey joined League Two club Forest Green Rovers on loan until the end of the season. He went straight into the starting eleven for the visit to Macclesfield Town and was involved in his side's goal in a 2–1 defeat. On his third appearance, in a 2–2 draw away to Grimsby Town, Bailey scored a "wonder goal" that manager Mark Cooper rated "the best goal [he's] seen at Forest Green." Against Port Vale on 11 February, a poor tackle left Bailey with ankle ligament damage; he returned to Birmingham for treatment and was expected to be out for six weeks. He had made five appearances when the League Two season was first suspended and then ended early because of the COVID-19 pandemic.