Against leesin, Lee Sin may try to kick k somebody like the ADC into his teammates. Group close together to make it harder for him to kick a carry into the arms of his team.

As Lee Sin needs to get onto someone in order to kick them towards his team, locking him down with CC as soon as he engages is ideal as he is rather squishy and will be unable to escape if he’s CC chained. 

Lee Sin is really good at taking down or picking off isolated targets. Make sure you group closer to your team to make it harder for him to take anyone down whose alone. Against leesin, Lee Sin can try to kick someone like the CDA in his teammates. Group closely together to make it harder for him to throw a hand in his team's arms. As Lee Sin needs to get on someone in order to kick them to his team, lock him up with CC as soon as he engages is ideal because he is rather squishy and will be unable to escape if he is chained CC. Lee Sin is really good at removing or removing isolated targets. Make sure you group closer to your team to make it harder for him to take anyone alone.