On 5 July 2010, Gillett agreed to join Doncaster Rovers subject to a medical, with the deal being completed on the evening of 7 July. Gillett signed a 2-year contract with Doncaster, and was assigned the shirt number 18. His second Doncaster debut came in a 2–0 win away to Preston North End; Gillett however, was sent off late on in the match, for two bookable offences. On 18 September 2010, he scored his first goal for Doncaster Rovers in a 2–2 draw with Watford. However, Gillett missed the most of the season with twenty–two appearance, due to injury.