Man United's Lisandro Martínez issues apology for post-match outburst

Lisandro Martínez has issued a formal apology after criticising Manchester United 's board following Tuesday's 2-0 defeat to Atlético Madrid . The Argentina defender took aim at director of football Jason Wilcox during his post-match interviews and suggested head coach Michael Carrick has been let down by a lack of summer signings. United's hierarchy, including Wilcox and Carrick, met with Martínez  at the club's training ground on Thursday before the 28-year-old released a statement apologising for his comments. "Today I met with the club's leadership and the manager," Martínez said in a post on social media. "It was a very positive conversation, where we were able to exchange views and speak openly about what happened after Tuesday's game. "Everyone knows that I am a passionate person and that I live football with great intensity. "The frustration of the defeat led me to express