Cleveland Browns star safety Ronnie Hickman was jumped by a crew of thugs at a trendy Lower East Side hotel Monday, law enforcement sources told The Post. Hickman, 24 — a New Jersey native who just finished a breakout season as a starter for the Browns — was approached by four goons in the lobby of the SIXTY LES hotel on Allen Street in Manhattan shortly after 4:30 a.m. and a dispute broke out, police and sources said.