3. Louis Van Gaal selling Javier Hernandez
Van Gaal brought in Radamel Falcao on loan to Manchester United in his first season meaning United were spoilt with options for strikers with Wayne Rooney, Javier Hernandez and Robin van Persie already available in their ranks. So, Hernandez had to be farmed out on loan to Real Madrid. The Falcao move exploded in United’s face badly with the Colombian looking like a spent force and with Chicharito enjoying a better spell than Falcao, it was widely expected that Van Gaal will have learnt his lessons and keep the Mexican at Old Trafford the following season.
However, the Dutchman sold Chicharito to Bayer Leverkusen the next season where the 28-year old had a stellar debut campaign scoring 26 goals. In a season where United struggled for goals with van Persie also leaving, it was a big mistake to let go of the energetic Mexican.