Rooney, who was an injury doubt before this weekend's game, was instrumental in United's 3-1 win over West Ham and Moyes believes the England international is now playing a key role in helping his team-mates improve.
Moyes has been impressed by Rooney's attitude since taking over at Old Trafford and believes the 28-year-old is showing more maturity on his way to becoming a true United great as he enters his tenth year at the club.
