Rowing New Zealand is yet to decide if they will support Drysdale in the single scull or move him to another boat - such as joining returing Olympic champion Hamish Bond in the eight.
Manson, who finished in a disappointing fifth the previous two times he held the seat at the world championships, said he has learnt a lot from the last couple of years and is excited to improve on those performances.
"I feel like I learnt a lot last year and the year before so every year is a new opportunity to learn. And yeah practice what I've learnt from the year before and put it into practice.
"I think it's just working with my coach Mike [Rodger] who I'm really excited to have and the physiologist. I really trust Mike's eye with the technique and really keeping them going right through.
"I think also staying in Europe the whole time this year will make a significant difference. And yeah it's great to be able to stay there for the whole three months and prepare properly for the world champs."
He's hopeful Rowing New Zealand will see things his way.
"I'm very hopeful that we can work together and it can be a 'win-win' for everyone but if I still have to do it the hard way which is outside the programme, then I am prepared to do that if that's what it takes to win a gold medal in Tokyo," Drysdale told Radio NZ.