Arsene Wenger scored Arsenal 's first goal in the 4-1 win against Liverpool . Franci Coquelin has been a revelation in front of Arsenal 's back four . Hector Bellerin admits he did n't expect the duo to become so vital .
Hector Bellerin scored Arsenal 's first goal in the 4-1 win against Liverpool . Franci Coquelin has been a revelation in front of Arsenal 's back four . Arsene Wenger admits he did n't expect the duo to become so vital .