More evidence to support the Johnny Manziel and Josie Canseco dating rumors -- the former college football superstar made another appearance on the model's social media on Thursday ... and once again, the proof is in the hand tats.
Manziel and Canseco were both in NYC this week ... and as we previously reported, it appeared the two took the flight to the Big Apple together, as the former MLB star's daughter shared a pic that showed the quarterback in the background.
If the couple(?