Chelsea midfielder Nemanja Matic is considering international retirement with Serbia.

Matic says he is thinking of quitting international football after Serbia were thrashed 4-1 by the Czech Republic in a friendly in Ostrava on Friday night.

"I always try to lead by example but some people don't want to see that," said the 27-year-old midfielder.

"The attitude of some players is unacceptable, not just on the pitch but off it too, and it was obvious from the moment we got together on Monday.

"I told our coach [Radovan Curcic] there is no point in me carrying on with the national team if things don't change.

"I'd really like to know whether some of my team-mates apply the same poor working ethic at their clubs as they do in the national team most of the time."