William Muir has declared Pyledriver an intended runner in the St Leger and warned that if he gets the trip "it will take a very good one to beat him".
He believes the Great Voltigeur winner could be the best horse he has trained and is keen to bid for a Classic with a colt who is a best-priced 5-1 second favourite for Doncaster after that success.
Immediately after his 1m4f York triumph, Muir had been considering the Grand Prix de Paris at Longchamp on the same September weekend as the Leger.
But he said on Sunday: "The plan at the moment is to look at the Leger as long as I'm happy with him – and he looks to be in superb form. He's in the Grand Prix de Paris but the Leger is for three-year-olds only, it's a Classic and at this stage that's where we're going.
"The owners said you only get one crack at a Classic and the worst that can happen is that he doesn't stay, he gets beaten and we put him away for the year. Whenever are we going to get a chance of having a go at a Classic with a really fancied runner?"
Logician went on from Great Voltigeur victory to land the 1m6f Leger last year and Muir does not see stamina as a big worry for Pyledriver, who also won the 1m4f King Edward VII Stakes at Royal Ascot in June.
"I won't be losing any sleep thinking he won't get the trip," he said. "Would he have won the other day with two more furlongs? I think the answer is yes. And if he stays the trip, it will take a very good one to beat him because he's got gears."
Muir is already looking ahead to 2021 with a colt who was a Listed winner as a juvenile and has progressed throughout his eight-race career.
"He's still maturing and next year he'll be even better," the trainer said. "He did what he did as a two-year-old because he's got class, he was a big weak baby. He got stronger and he's continued to do so.
"He'll be fully mature next year and he could end up being the best horse I've ever trained and I've had some nice ones – Enforcer was rated 120 and we've had horses like Stepper Point and Averti winning Group 2 races.
"We haven't quite got our head in front in a Group 1 and if he can do that he's got to go to the top of the tree."
Muir has not had time to sit back and savour last Wednesday's Group 2 success yet. He said: "I've been working hard and driving the box to the races everywhere because people are on holiday at this time of the year; you get your coat off and get stuck in, but I've still enjoyed it, this is what we do it for."