By Chris Rosvoglou It was announced on Wednesday that Colin Kaepernick had a workout with the Las Vegas Raiders. According to NFL Network’s Ian Rapoport, Kaepernick’s workout with the Raiders went well. “On Colin Kaepernick’s workout with the Raiders: Sounds like it went well and he impressed,” Rapoport tweeted. “The door is open.” Though he hasn’t played in the NFL since the 2016 season, Kaepernick has made it abundantly clear that he wants to play football again. A deal isn’t imminent at this time, but Raiders owner Mark Davis has expressed confidence in Kaepernick in the past. “I believe in…