"My thoughts go back to our treble year with no doubt in my mind that the key to our success in 1999 on three fronts was the fact that we also had four top-class strikers.
"I was able to vary my selections and keep our attack fresh and firing on all cylinders with each of them making a telling contribution as we went quickly from one competition to another, especially in the closing stages when the games arrived thick and fast.
"Hopefully, with four strikers available now, we will be able once more to keep the goals coming in the Premiership, the FA Cup and soon in Europe."
Manchester United's players will share a huge £5.6million bonus pay-out if they can stage a repeat of their 1999 Treble success this season.
Sir Alex Ferguson's players will be handed a bumper pay-out of around £350,000 a man if they can repeat their unique haul of the Premiership, Champions League and FA Cup.
United's players will receive around £200,000 each for going all the way in Europe, £100,000 for wrestling the Premiership title from Chelsea's grasp and a further £50,000 if they can land Fergie a sixth FA Cup.