How do deal with this guy

[sations]

So we have a regular 1/2 limit game usually 6-9 players. It has been going good for a while now. I now am faced with a new problem... This guy we'll call cheapo has started a new game plan. Cheapo, after having lost big a couple of times lately ($100), now decides that when he is up 40 or 50 he quits. Which kinda puts a damper on the game. After trying to explain my concern to him he states, "if you let me take cash off the table and continue to play I will but I am trying to protect my bankroll." Yeah on of those guys. Any ideas would be appreciated do to the small amount of players it is hard to loose one guy. Also, do any of you let people take cash off the table when your playing limit, without making them quit all together?