Ferguson admitted his job is getting more difficult as a consequence of his side's Carling Cup run.
And, as Brazilian youngsters Rafael and Rodrigo Possebon also impressed, along with fellow countryman Anderson, Ferguson admitted he has some selection dilemmas looming.
"The great bonus for me is that we have players who are now coming into form," said the United boss.
"Carlos Tevez scored four times and produced a marvellous performance, as did Anderson and Jonny Evans.
"It definitely makes my job more difficult, although it also makes the club stronger."