It was announced on Tuesday afternoon that the goalkeeper had completed a permanent transfer from the Reds to fellow Premier League side Brentford.
Kelleher departs having stepped up from the Academy to make 67 senior appearances at Anfield, helping claim seven trophies in his spell – two Premier League titles, the Champions League, the Emirates FA Cup, two Carabao Cups and the UEFA Super Cup.
Taking to social media following his exit, he wrote: “I came to this club as a 16-year-old boy [and] 10 years later I could never have dreamed of the journey I would go on.
“To have the opportunity to play for this club was something I never took for granted and the memories I have I will cherish forever. From making my debut to winning trophies, I have loved it all.
“Thank you to everyone at the club from the staff to my coaches and my teammates past and present. You have all helped shape me into the man I am today. To the fans, thank you for the amazing support throughout the years. I have always felt the love and it means a lot.
“I will always have a special place in my heart for this club and city. Thank you all and good luck for the future.
“You’ll Never Walk Alone.”