The unbeaten colt beat his main market rival for the Group One in Aidan O’Brien’s Deauville in the Royal Lodge last time out.
He is favourite for next year’s Investec Derby and will be looking to put the seal on a tremendous season for Gosden and Frankie Dettori.
However, if more rain than is forecast falls Gosden may need to think about running him.
“It’s autumn ground, it’s sticky and dead,” Gosden said.
“There is some rain forecast. If it does turn very soft that would worry me. This horse has got a good turn of foot.
“If it turned into a slog that would concern me, but let’s see how much rain comes.”
Foundation is owned by Highclere Thoroughbred Racing, run by Harry Herbert.
Foundation’s owners include former Manchester United manager Alex Ferguson.
“It’s more than exciting for everyone involved, we’ve got a good team going to Doncaster and we’ll see whether he’s up to winning a Group One at this stage of his career,” said Herbert.
Aidan O’Brien has a formidable hand in his bid for an eighth Racing Post Trophy triumph.
The trainer’s son, Joseph, gets the leg-up on Royal Lodge runner-up Deauville, who has three-quarters of a length to make up on Foundation on their Newmarket clash.
The master of Ballydoyle also saddles the Seamie Heffernan-ridden Johannes Vermeer, last seen finishing fourth in the Prix Jean-Luc Lagardere at Longchamp, and Beresford Stakes winner Port Douglas, the mount of Emmet McNamara.
Hugo Palmer has enjoyed something of a breakthrough season, enjoying numerous big-races success with Classic heroine Covert Love, Gifted Master and Galileo Gold.
The Newmarket handler has an interesting contender for this prestigious event in the form of Mengli Khan, who having shaped with promise on his Rowley Mile debut last month, got off the mark in some style at Nottingham two and a half weeks ago.
Palmer said: “He is a very big horse, but he has a high cruising speed and travels very well in the soft ground.
“He is a high-class horse who will be much better as a three-year-old.”
Tony Curtis, who has won twice from three starts for Richard Hannon and Peter Chapple-Hyam’s Marcel make up the field.