"He's a nice up-and-coming horse and should have a good future," Collett said of Brayroan on Saturday.
"It is good to go out on a high note. I'm going home tomorrow and then riding in New Zealand next week before going on a holiday.
"What to from there I'll have to wait and see."
Waller is keen for the apprentice to make his way back to Sydney and Collett said there was no doubt he would be back at some stage.
"As to how long until I'm back, I'm not sure," Collett said. "It's been a great experience riding against the great riders and it's been good for me. I've learned a lot and had a lot of success too. A huge thanks goes to Chris [Waller] because he's put me on some nice horses, like this bloke, which is a great feeling."
Waller, who had his parents and wife Stephanie's parents at Rosehill to help celebrate his first Sydney trainers' premiership, has a good opinion of Brayroan and said the gelding would benefit from the addition of blinkers in the near future.
"I think it showed he needs blinkers on, he's a typical son of Zabeel," Waller said.
"He was sluggish away and is going to sleep but it was a tough staying test and he's passed that test.
"I think you'll see a better horse with blinkers."
In other Sydney news, trainer Joe Pride will decide this week whether boom sprinter Rain Affair will join stablemate Neeson in Saturday's Missile Stakes at Randwick.
Rain Affair took his record to six wins from seven starts with a resounding five-length victory at Warwick Farm on July 23 and has now won his past four starts by an aggregate of more than 16 lengths.
"I'm happy with the horse, I doubt that would be a factor in the decision," Pride said. "I'll have a look at who he's got to beat because it is a decent jump up in grade."
- AAP
