 Back with Derby he helped Rory Delap's under-21 side to win the 2015–16 Professional Development League 2 title, but left Pride Park after he was released in the summer.On 1 July 2016, Thomas signed a two-year contract with Coventry City.Manager Tony Mowbray said that "he has a lot of assets and it's a question of moulding him in the right way because I think he's got the potential to be a really good footballer".