Keegan announced this week that he would not be offering a new contract to the crowd favourite, who suffered an injury-plagued final season with the Blues.
However, the Australian wide-man felt he should have been given more of a chance to prove himself, having made a total of just 9 appearances.
"I think I should have had more games for City this season," he told BBC Sport. "I worked hard at times but didn't get the rewards, even though the team wasn't doing the best."
"Towards the end of last season I was given an indication that this year would be tricky for me because the manager intended to bring in a few new players," added Tiatto, 31 next Saturday.
"People have their opinions but I still believe I am capable of playing at the top level and I would like to stay in the Premier League and prove a few people wrong.
"There has been a fair few people interested but I won't make a final decision until after all the play-off games are finished."
Tiatto felt the fans appreciated his style of play, saying: "The supporters realised I always gave 100%. They always backed me through the tough periods as well as the good times and I will be sad to leave them.
"I will never forget them and one day I hope to come back and show my appreciation. Hopefully, though, I won't haunt them as other ex-players have done in the past."
.....sadly, Danny, I'm sure you will.