The Mexican spent five years at Old Trafford before being sold to Bayer Leverkusen on deadline day in a deal worth £7.1m.
Hernandez played a key part in Man United’s Premier League success in recent years, scoring 59 goals in 157 appearances.
He thanked Ferguson for his role in that but seemingly made a point by leaving out Moyes and van Gaal.
Ferguson had a remarkable ability to make every player feel special at United and unfortunately Moyes and van Gaal couldn’t do the same with Hernandez.
Although the 27-year-old remains a fantastic finisher, his all-round game was not deemed up to scratch in his final years at United. Hernandez produces his best when a team moulds their style of play towards him and he should get that in Germany.