Touching tribute from Devin Booker to Kobe Bryant ... the Phoenix Suns superstar immortalized an autograph he got from the Mamba with a tattoo on his forearm.
Here's the deal ... back in March 2016, Devin -- a rookie at the time who grew up idolizing Kobe -- played Bryant in one of legend's final NBA games.
And afterward, Kobe had a long talk with the budding All-Star ... and gave him a pair of signed shoes with two messages on them.