The Angola international was left out of the Greek side's squad to face Rangers in the UEFA Cup on Thursday following his exploits at the African Nations Cup.
The 24-year-old, who scored four goals at the tournament, moved to Panathinaikos on loan until June 2008 last month, but has yet to play for his new side.
Manucho said: "I just want to meet my new colleagues and technical staff and win their support so I can work as well as they want me to.
Manucho averaged a goal a game at the African Nations Cup as unfancied Angola made it to the quarter-finals before losing to eventual winners Egypt.
He added: "It happened as I expected - to score one goal per game. My team-mates supported me well and I have to thank them.
"I believe things could have been even better if we progressed to the semi-final."
The striker has been unable to acquire a work permit to play in England as he has not featured in 75 per cent of Angola's matches over the last two years.
Speaking in Johannesburg during the launch of his team's proposed tour to South Africa in July, Ferguson said: "Given that he played for Angola and did so well at the African Nations Cup, we will re-apply for his work permit in the summer and hopefully next year he could play for us."
Manucho could not hide his delight at Ferguson's words of support.
He said: "It is a pleasure hearing all these praises and interest from someone as experienced as Alex Ferguson.
"If things turn out favourably, I will do my best to score as many as I can and hopefully not disappoint anyone."