Toulon’s Castrogiovanni soured his memory at Leicester, says Cockerill

• Richard Cockerill responds to tirade from Italy prop• Toulon’s Delon Armitage also under scrutiny by Champions Cup officials• Match report: Leicester 25-21 ToulonRichard Cockerill believes that the former Leicester prop Martin Castrogiovanni has sullied his seven-year playing career with the club thanks to his expletive-ridden tirade against him after Toulon’s 25‑21 Champions Cup defeat last Sunday.The verbal attack on Cockerill, the Tigers’ director of rugby, is being investigated by the competition’s organisers, European Professional Club Rugby (EPCR). Castrogiovanni sought out journalists…