Aidy Boothroyd expressed his desire to keep Foster at Watford for a third season on a number of occasions during the 2006–07 season, but his hopes were dashed in January 2007 when Alex Ferguson announced his intention to bring Foster back to Old Trafford at the end of the season.
Aidy Boothroyd udtrykte sit valg, om at han ville beholde Foster i Watford for en tredje sæson til adskillige kampe under 2006-07-sæsonen, men hans håb blev slået væk i januar 2007, da Alex Ferguson meddelte sin intention om at bringe Foster tilbage til Old Trafford i slutningen af sæsonen.