Zabaleta was considered one of the best full-backs in the Premier League not too long ago but the Argentinean international has endured a dramatic loss of form over the course of the current campaign.
As a result, Zabaleta no longer remains the automatic first choice for City at right-back and the 31-year-old has now gone on to acknowledge that he might leave the Etihad Stadium this summer.
When asked if he only had a few games left in a City shirt ahead of Tuesday's Champions League clash with Real Madrid, the former Espanyol defender said: "I don't know.
"We still have five games at the moment, maybe six if we reach the Champions League final — so I'm just thinking about finishing this season in the best way.
"Tuesday will be one of the biggest nights in the history of Man City.
"Fans, players, we have been waiting for this moment for so many years and now the chance is here. We're facing a great team but we have belief. We have confidence that we can play a great game."