There’s a toughness issue with this team, and the loaded schedule the Bulls have been playing lately continued to expose it. Against the Pelicans, the Bulls were without DeMar DeRozan (groin). “I think there is confrontation,’’ Donovan did say of his team. “I think that has happened behind closed doors. Our guys are professional. I’m not saying Udonis and Jimmy Butler aren’t professional. I’m saying those guys kind of handled it, and it didn’t get out to the public. But the biggest thing for us right now is when you watch the Milwaukee game or the Philly game, Utah game, Memphis game, those teams that are big, strong and physical, you gotta put a body in plays.