Last year Harry Kane as priority by Manchester City and he begin in this season with bad performance
His bad performance this season may be caused by his low motivation to play. I am sure he is very disappointed with Tottenham management. In the previous transfer window, he really wanted to leave. Unfortunately, Tottenham management didn't allow him to leave. That situation must influence his mood in playing, he didn't play with a good motivation to score.
I think Manchester City will not interested again with Harry Kane because he not has top performance like last season
It totally depends on how Man City management viewed his situation. In my opinion, they should understand why Harry Kane plays badly this season. So, they are still interested to sign Harry Kane. Moreover, Man City management can ask for lower transfer fees because Harry Kane's performance isn't as well as in the previous season.