Quincy Abeyie wrote:
Coquelin, who turns out to be miles better than Flamini, spent the season on loan until there was a crisis and we needed him back. Bellerin, our best RB, got his chance first when both Debuchy and Chambers were unavailable. Wenger was basically forced into playing these guys.
Wenger said Coq wasn't sharp enough, and sent him on loan, and that he would call him back if he proves his worth.. rest is history.
Chambers had more experience than Bellerin in the PL, and we had just paid 16M for him. Chambers did overall well enough to keep an unknown quality away. Bellerin did get a few games early on too, and it's not like he was great, as he is now.
Wenger discovered these, and gave them the chance to shine. Whether he should've played them earlier, and more is a difficult debate, but pretty easy with hindsight.