 Complete the following phrase:  Mills made his Forest Green Rovers debut, starting the whole game, and helped the club kept a clean sheet, in a 10 win against Oldham Athletic in the opening game of the season. He then started in the next five matches for Forest Green Rovers before being sentoff for a second bookable offence against Bradford City on 24 August 2019 and then suffered a hamstring injury during a 20 loss against Newport County on 31 August 2019. After being sidelined for weeks, it wasnt until on 28 September 2019 when Mills returned to the starting lineup against Salford City and kept a clean sheet, as the club won 40. However, his return was shortlived when he suffered a hamstring injury in the 10th minute and was substituted, as Forest Green Rovers won 31 against Crawley Town on 5 October 2019. It wasnt until on 12 November 2019 when Mills returned to the starting lineup against Walsall, captaining the club, as they lost 60. Following this, he regained his first team place, playing in the centreback position. However, Mills soon lost his first team place and was demoted to the substitute bench. This last until 