Champion jockey Tony McCoy looks set to partner Jonjo O'Neill's Can't Buy Time as he chases an elusive first success in the English Grand National at Aintree.
McCoy's boss, leading owner JP McManus, has four entries for the world's most famous race in King Johns Castle, Don't Push It, Arbor Supreme and Can't Buy Time.
The Willie Mullins-trained Arbor Supreme is the shortest of the quartet in the betting but at this stage, he is set to be ridden by Paul Townend.
McManus's racing manager Frank Berry said: "Paul Townend is probably going to ride Arbor Supreme and we're not certain yet whether AP will ride Don't Push It or Can't Buy Time.
"Nothing is written in stone yet, but I think Tony will ride one of Jonjo's (O'Neill) horses.
"It is a while away yet so nothing is certain but, at this stage, it's more than likely Tony will ride Can't Buy Time."
Speaking on his Facebook page, Mullins said: "Paul Townend is going to ride Arbor Supreme in the Grand National."
Earlier in the day Arbor Supreme had been the subject of substantial support for Aintree, with Victor Chandler cutting him to 12/1 from 16/1 in expectation that McCoy would take the ride.
Mullins has another leading Grand National contender on his hands in Snowy Morning, but was unable to confirm jockey plans for him.
"All I know is that Paul will ride Arbor Supreme," Mullins added.
Aidan Coleman is excited about teaming up with last year's winner Mon Mome.
Liam Treadwell was the lucky jockey on board the Venetia Williams-trained 100/1 chance at Aintree in 2009 while Coleman partnered stable-mate Stan and was unshipped at the seventh fence.
Coleman believes he has every chance of making amends 12 months on especially after steering the 10-year-old into third place behind Imperial Commander in the Cheltenham Gold Cup.
"All you can take from Cheltenham is a positive -- third in a Gold Cup, not many horses can do that, and win a Grand National," Coleman said.
"Hopefully, it's all systems go for Aintree now.
"I'm nice and relaxed about it. I'm going to go out and enjoy it and have a bit of fun like we always do."
Mon Mome is a top-price 12/1 to become the first horse since Red Rum in 1974 to win back-to-back Nationals, although Comply Or Die was second last year after winning in 2008.