LYNN – It will get tougher to enter Manning Field during local games as soon as this Friday night after crowd-control measures are implemented in the wake of an arrest during last week’s English-Danvers game.Acting Police Chief Kevin Coppinger said the proposed measures include selling tickets to games past halftime rather than allowing free admission to the field during the second half. In addition, anyone who leaves the field will not be readmitted without a ticket.”There will be no in-and-out. If you come back, you will have to pay another admission; we’ll have some control over it,” Coppinger said.City officials will finalize the tougher admission standards this week following the arrest of Gabriel Salado, 17, of 117 Chestnut St., who was charged on Friday with disorderly conduct after a crowd of youths surrounded Salado underneath the bleachers during the game and began shouting and using profanity.The outburst occurred at 8:49 p.m. and attracted a large crowd.Four police officers hired by the School Department to provide security dispersed the crowd but police were called at 10:11 p.m. to North Shore Children’s Hospital by doctors treating a 16-year-old Lynn male for a possible stab wound.”On arrival at Salem Hospital, the 16-year-old did not have any specific memory of what had transpired; only that he was attacked at Manning Field while attending a game there. Other witnesses stated that a fight had taken place at the entrance and that they found the 16-year-old in the parking lot injured,” Police Lt. William Sharpe said.Police subsequently determined the teen sustained a non life-threatening injury that was not a stab or penetration wound. A relative of the teen drove him to the hospital. Police are seeking witnesses to the attack.Coppinger said there have not been attacks or crowd problems reported at other Manning Field games to date this year. Field workers stepped up security following the theft of valuables from the Manning locker room during the July Agganis Classic game.”We’re just asking, ‘What can we do better at Manning?'” Coppinger said.