Mata arrived at United shortly after Alex Ferguson ended his trophy - laden 26 - year spell at the club .
The Spaniard hopes the 20 - times league champions can recapture those glory days under Mourinho .
Mata arrived at United shortly after Alex Ferguson ended his trophy - laden 26 - year spell at the club and the Spaniard hopes the 20 - times league champions can recapture those glory days under Mourinho .