Ruben Amorim's wife 'best friends' with partner of new Man City sporting director as Man Utd rivalry threatens to grow behind the scenes
Ruben Amorim's move to Manchester United means his wife, Maria Joao Diogo, is now set to become the rival of one of her best friends.
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- Amorim appointed new Man Utd head coach
- His wife runs business with Hugo Viana's partner
- Viana heading to Man City in summer