Connor Gallagher is a Chelsea boy to the core.
I'm sure he would expect boos from some of our crowd. That's football.
He did well for us on loan, but quite rightly wants to celebrate with fans of the club he loves.

Luckily for him, he is loved by Pochettino despite not really being Champions League quality.
Sadly, he was good enough to score twice against our floundering defence. That is more to do with our injury problems than with booing, I would suggest.