This Reece James vs Kieran Tierney incident was a controversial one from the London derby on Boxing Day, with referee Michael Oliver deeming that the contact was worth a penalty. Alexandre Lacazette put away the resulting spot kick to give Arsenal the lead. Fans and pundits were divided in their opinion whether the James foul on Tierney was a penalty or not.
Lacazette penalty against Chelsea | Reece James foul on Tierney VAR review
Minutes after this penalty, a brilliant Granit Xhaka free kick put the Gunners 2-0 ahead.