Why did Martinez call out Man Utd hierarchy?

Lisandro Martinez's NON-APOLOGY: Ranting Man United star admits he 'spoke out of anger and frustration' but refuses to say sorry in 271-word statement

'Players won't like it' - Martinez apologises, but is the damage done?

Outburst came out of 'anger and frustration' - Martinez

Martinez outburst came out of 'anger and frustration'

Lisandro Martinez admits he 'spoke out of anger and frustration' during bombshell interview criticising Man United hierarchy - as Argentine insists he 'believes in everyone' but fails to say sorry in 271-word statement

Lisandro Martinez breaks his silence after his bombshell takedown of Man United chiefs - but DOES NOT say sorry after hitting out at club's transfer strategy

Yoro sent off as Man Utd stumble to defeat against Atletico Madrid

Mason Greenwood booed by Aston Villa fans as former Man United star plays in England for the first time in over FOUR years - after Old Trafford career unravelled following rape arrest

Wilcox the target again in another damaging Man Utd fallout

Wilcox the target again in another damaging Man Utd falling-out

'We expect more from the top' - Martinez hits out at Man Utd board

Wayne Rooney's transfer request regret, Roy Keane's bust-up with Fergie and the interview that spelt the end for Cristiano Ronaldo - the warning signs for Lisandro Martinez after his Madrid meltdown

Man United chiefs consider options after Lisandro Martinez's bombshell takedown of their transfer policy - with defender's contract set to expire in eight months

Why did Martinez call out Man United hierarchy?