The Argentina international was back at Manchester United on Sunday for the first time since swapping red for blue over the summer.
Tevez spent two successful seasons with the Red Devils before crossing the city in the close-season to join free-spending Manchester City.
But the forward was roundly booed throughout City's 4-3 defeat and was thought to be the target for a missile that struck team-mate Javier Garrido as the sides left the field at half-time.
It was a turn of events that has left Tevez perplexed given he had been awarded a warm reception by his former team-mates.
"I must admit I did believe I would get a different reception from the United supporters," he is quoted as saying in the Daily Mail.
"Initially everything was positive and I was greeted by my former team-mates and United staff without any problems at all.
"But as soon as I entered the field the atmosphere was very different. It was hard to take because previously I was always wanted by those people."