Jimmy Moffatt's stable star won the race in 2015 and was agonisingly caught in the shadows of the post last year by Vieux Lion Rouge.
That David Pipe-trained rival is also in the mix again along with
Grand National fourth Blaklion, who claimed a fine second in the Charlie Hall Chase at Wetherby on his seasonal return.
One due to travel from Ireland is Eoghan O'Grady's Westerner Point, well beaten in a Galway hurdle on his seasonal bow but a winner over three miles last term.
"He has been fine since Galway. That was his first run for a good while and he should strip a lot fitter the next day.
"We want to go for the Becher because he is a very good jumper and I think the track at Aintree will suit him. We think he likes a level track, as you saw when he won at Cork.
"He stayed the three miles well at Cork."
Gas Line Boy, Lord Windermere, Regal Encore, Good To Know and The Last Samuri all completed the Grand National in April and are entered again here.
Paul Nicholls could run dual Scottish National winner Vicente and Badger Ales hero Present Man, with Ucello Conti and Mala Beach possibles for Gordon Elliott.