Hello. I just had one of my retainers hit lv 50. He's a gladiator and I'm trying to figure out how to gear him now. I don't have any extra gear for him, so I have to go out and get some. I did notice however that my lv90 gear is greyed out when I look at my armory chest. I can't equip a valor coronet for example?

My question is what can or can't I equip him with? I don't want to go out and get something only to find out he can't equip it. Thanks!