Manchester United defender Lisandro Martinez apologised on Thursday for publicly criticising the club's board for a lack of investment in the transfer market following their defeat by Atletico Madrid.Martinez took aim at technical director Jason Wilcox, saying he "100 percent" expected more investment in the squad during the transfer window after United finished third in the Premier League last season to return to Europe's top competition. Manchester United defender Lisandro Martinez issues an apology following his controversial remarks criticising the club's hierarchy. Key points and original sources are listed below.

• Manchester United defender Lisandro Martinez apologised on Thursday for publicly criticising the club's board for a lack of investment in the transfer market following their defeat by Atletico Madrid.Martinez took aim at technical director Jason Wilcox, saying...S1

• Manchester United defender Lisandro Martinez issues an apology following his controversial remarks criticising the club's hierarchy.S2S8

• Lisandro Martinez apologises for postmatch outburst after meeting Man Utd leadershipS3

• Centre-back Martinez verbally attacked sporting director Jason Wilcox saying ‘we expect more from the top’ following United’s Champions League defeat to Atletico Madrid in midweek but has now apologised after clear-the-air talksS4

• Manchester United defender Lisandro Martinez has issued an apology for his outburst after Tuesday's Champions League loss at Atletico Madrid.S5S6