Based on the summerleague, no. Gaffney is an NBA defender, but a mediocre highschool offensive player. Until he learns to play offense on the perimeter about 20 times better, he is not an NBA player, despite the fact that he can already defend. And Gaffney is a dime a dozen D-league combo-guard. The C's already have 3 combo-guards ahead of him on the depth chart (and that doesn't even count the starters), so he really has not chance.