Bertin finished as the runner-up of Allievi Nazionali League in June 2009 as starting right-back.
[3] On 31 August 2009, Bertin moved to fellow Serie A club Chievo in temporary deal, re-joining former teammate Nestor Djengoue and Daniele Co.[4] That season Inter did not have its Berretti under-18 team in its youth rank and no room for Bertin in Primavera, as the club already promoted Felice Natalino and Cristiano Biraghi from Allievi as well as had senior member likes Giulio Donati and Davide Santon.
On 12 August 2010 Bertin was signed by Chievo on free transfer,[5] after Inter signed another fullback Davide Faraoni, but Bertin was immediately left for Pro Patria in co-ownership deal for a peppercorn fee of €500, rejoining teammate Amedeo Benedetti.
[5] In June 2011 both clubs failed to agree the price of the remain 50% registration rights before the deadline.
Bertin also selected to the representative team of the second division group B, for 2012 Lega Pro Quadrangular Tournament.