United were widely condemned for their transfer business over the summer.
Both Moyes, and particularly executive vice-chairman Ed Woodward, were criticised when Marouane Fellaini ended up being their only signing.
Even then, the transfer only took place when Fellaini agreed to waive around £4million in loyalty payments from Everton so United did not end up forking out more than the £23.5million clause inserted into the Belgian's contract which Moyes allowed to expire at the end of July.
Some supporters were irritated enough to write to the Old Trafford outfit and demand answers.
And under the fans' charter, established by the Premier League and which United adhere to, director of communications Phil Townsend wrote back to explain the club's thinking.
"The club has always backed the manager in the transfer market, as Sir Alex (Ferguson) has said on many occasions and it will continue to do so," said Townsend.
"The club has demonstrated its belief in, ...