What happens if you discover that some workers do not like working in teams?

It is known that every organization spends a lot of money on training its staff about teamwork. However, some people do not like working in groups or teams. The question is therefore: what should a leader do if he or she discovers that some of the subordinates do not like working in teams? How should he or she proceed about this? Should a leader fire those who cannot work in teams or should he tolerate them? What happens to those who obey working in teams? 

     If you are a leader, think about this question and make a comment on how you should deal with the problem.