If Keelan gets cut again, I think he should consider the CFL where he could probably do very well. The downside is that he may make more money on the Raiders practice squad than as a full time, starting player in the CFL. However, getting to play the game he loves might be worth a bit of a pay cut. Heck, wouldn't it be great if Calgary picked him up and Maier was throwing to him again!
How many former Aggie players made an NFL roster and played at least one game? Off the top of my head I can name these guys: Ken O'Brien, Rolf Benirschke, J. T. O'Sullivan, Tom Williams, Mike Moroski and Bo Eason. I think only the first two had any kind of length to their careers.
Doss is on that list too. Raiders had injuries last year and the year before, Keelan played in 8 games in the 2019 regular season, played 1 game last season in Vegas.
...and for what it's worth O'Sullivan was a journeyman in the League for 8+ years...and 8 different teams, man, talk about seeing some of the country. '07 and '08 were his formidable shots at starting, Mike Martz was enamored with J.T.'s intelligence in San Francisco but he didn't last past the 8th game as a starter when the Niners came up 2-6 with J.T. at the helm. In that span J.T. threw 8 TDs and had 11 picks, and lost 4 fumbles.
2010 Oakland Raiders
2009 Cincinnati Bengals 2008 San Francisco 49ers
2007 Detroit Lions
2006 Carolina Panthers
2005 Minnesota Vikings
2004 Green Bay Packers
2003 New Orleans Saints
2002 New Orleans Saints
Here's a list of UC Davis guys drafted into the NFL: https://en.wikipedia.org/wiki/List_of_UC_Davis_Aggies_in_the_NFL_Draft
Of course, this misses any free agents signees, like Keelan Doss. I suspect it is also way out of date, since Colton Schmidt, Daniel Fells, etc. are not on the list.