Lucinda Russell is "pretty sure" Derek Fox will be fit to ride One For Arthur in the Randox Health Grand National in just over a fortnight's time.
Fox took over as stable jockey at Russell's Kinross yard following the retirement of Peter Buchanan, and has been in the saddle for the eight-year-old's two wins this season at Kelso and most recently in the Classic Chase at Warwick in January.
But he has not ridden since a fall at Carlisle on March 9.
The pair gained valuable experience over the Aintree fences when a close fifth in the Becher Chase in November and One For Arthur is one of the ante-post favourites for the great race on April 8.
"He's actually down at Jack Berry House in Malton with Scu (Peter Scudamore, assistant trainer)," said Russell.
"He's always been confident he'll be back in time and I'm pretty sure he will be.
"One For Arthur is in great shape, we've had mixed feelings watching some of the horses he's been running against come out and win big races, but I'm sure we're doing the right thing by him."