When AJ McCarron became a free agent, the Bengals brought in journeyman Matt Barkley to back up Andy Dalton. Barkley was drafted by the Eagles when Bill Lazor was the offensive coordinator in Philadelphia, and has bounced around the NFC for the past five years. He has only faced the Bengals once, in a 34-31 Cardinals victory on November 11th, 2015 as the third string quarterback for Arizona. So, Barkley met most of his new teammates for the first time when he reported to OTAs this summer.
There was, however, one player he already knew quite well: Vontaze Burfict.