( CNN ) -- Luis Suarez appealed to the Court of Arbitration ( CAS ) Friday against his four-month ban imposed by FIFA for biting during the 2014 World Cup in Brazil . Suarez and his legal team spent five hours before a three-man CAS appeal panel in Lausanne in an attempt to reduce the suspension , which covers all football activity . The Uruguay striker bit Italy defender Giorgio Chiellini on the shoulder during a World Cup group game in Natal last month . It was the third time he had committed a similar offense and it drew an immediate response from football 's world governing body . With Suarez banned , Uruguay lost its last 16 match to Colombia and was knocked out of the World Cup . Despite the punishment , it did not stop Spanish giants Barcelona from signing Suarez from English Premier League Liverpool in a $ 127 million deal last month . Ushered away . Suarez did not comment to reporters either before or after the proceedings Friday in the Swiss city , but did take time to sign autographs for waiting children before being ushered away . His connections are hopeful of cutting his ban by two months , meaning he would be available to make his Barcelona debut by the end of the month . The CAS said it would issue its decision `` as soon as possible , probably before the end of next week . '' Suarez , 27 , was top scorer in the EPL last season , winning the two major player of the year awards for his outstanding performances in helping Liverpool to runner-up spot in the standings . He suffered a knee injury at the end of the season which threatened his participation in the World Cup , but he recovered to score two goals in a decisive 2-1 victory over England . But in the final group game , his bite on Chiellini , captured by television cameras , provided the most notorious moment of the World Cup . UEFA adopts spray . One of the biggest successes of Brazil 2014 was the use of a `` magic spray '' which was used by referees to mark the spot from which a free kick was taken and to make sure the defensive wall retreated the requisite distance . UEFA said Friday that it would be used in all its competitions , including the Champions League , following successful trials in its recent under-17 championship in Malta . `` As we all saw at the World Cup , this spray was very useful in helping the referee in free-kick situations , and I am sure we will see similar results in our matches this season , '' said UEFA president Michel Platini . The spray will be used for the first time in the UEFA Super Cup game between Real Madrid and Sevilla in Cardiff on August 12 . Celtic lifeline . In other football news Friday , Scottish champion Celtic has been handed a Champions League lifeline after UEFA punished Legia Warsaw for fielding an ineligible player . Legia won the third qualifying round tie 6-1 on aggregate , but brought on Bartosz Bereszynski for the last four minutes of its 2-0 second-leg victory at Murrayfield Wednesday . Bereszynski was supposed to be serving a three-game ban for violent conduct in last season 's Europa League . UEFA awarded the second leg game 3-0 to Celtic , handing them victory on away goals . Legia , who say the problem arose because of the failure to fill in appropriate paperwork for Bereszynski , will appeal the decision .
Luis Suarez appeals biting penalty at sport 's highest level . FIFA suspended Uruguay striker for six months . UEFA to sanction use of ' magic spray ' used at World Cup . Celtic thrown Champions League lifeline .