(Reuters) – English soccer regulating bodies including the FA, the Premier League, the EFL and PGMOL are “very concerned” about recent incidents of violence, discriminatory acts and pitch invasions, they said in a joint statement on Tuesday. Sunday’s FA Cup tie between Wolverhampton Wanderers and West Bromwich Albion was interrrupted by clashes involving the two sides’ supporters that left many injured. On Saturday, a spectator invaded the pitch at Vale Park and chased the referee off the pitch during a League One clash between Port Vale and Portsmouth. Earlier this month, AC Milan keeper Mike…