Shishkin looks "absolutely magnificent" says Nicky Henderson, who has given the chasing star the green light to resume training.
The dual Cheltenham Festival winner was sidelined with a rare bone problem following his hat-trick bid at the fixture in March. Pulled up behind Energumene in the Queen Mother Champion Chase, the odds on favourite was checked over in the aftermath of the shock defeat.
He was given a long break, which the Seven Barrows handler reports has done the trick.
