Johnny Manziel will spend the next two days visiting with the Oakland Raiders, a league source told ESPN NFL Insider Adam Schefter. Manziel flew to Oakland on Sunday morning following his appearance Saturday night at the NCAA basketball tournament Final Four games in Arlington, Texas, according to the source. The former Texas A&M star will visit with the Raiders on Sunday night and Monday. It will not be the first pre-draft visit for Manziel, who has been projected as a possible first-round pick. The 2012 Heisman Trophy winner already visited with the New England Patriots this past week, according to sources. http://espn.go.com/nfl/draft2014/story/_/id/10737875/johnny-manziel-visit-oakland-raiders