The former England scrum-half announced his injury-enforced retirement in the summer but returned as a guest for Saturday’s Aviva Premiership match and joined Tigers executive chairman Peter Tom and executive director Peter Wheeler on the pitch at half-time.
Wheeler said: “Harry started playing rugby aged six at South Leicester and came right through with Leicester Tigers to play at every level of the game.
“He made his debut against Toulouse in the summer of 2001 and ended that season with an unforgettable winning try in the Heineken Cup semi-final win over Llanelli.
“He represented England at every level and went on the Lions tour in 2009.
“We thank you Harry for a decade of service and outstanding commitment to the club, and wish you well for the future.”
Ellis, who earned a fantastic ovation from a 17,000-strong home crowd, took the microphone to address the supporters and told supporters: “Thank you so much for the last 10 years. Playing for Leicester Tigers is what I always wanted to do as a young lad stood on the terrace near the dug-out at Welford Road.
“I have some great memories of the club.
“Rugby is all about making friends. Over the last 10 years I have made some life-long friends and I am leaving with some great memories.
“The most important people are the fans. You make it so special for me and the other players. Thank you very much.”