Most Clans I see have a minimum Experience Level but in my opinion it’s good to set up general Defenses a potential Clan Member should provide. In general, this comes down to the Archer or Wizard Level. It’s also important that people are able to donate Troops that can be used. Most people would consider this player very helpful and social but if they donated 1.500 more Troops than they took the possibility of getting a neutral or positive Donation Balance.