Grand National on the agenda for Sir Alex Ferguson's Harry The Viking The eight year-old, who is trained by Paul Nicholls, looks a likely Aintree type, having finished second to the useful stayer Teaforthree in the four-miler at the Cheltenham Festival last March. On his latest appearance he ran a creditable ninth in the Hennessy at Newbury on Dec 1, which was won by the Gold Cup favourite, Bobs Worth. The Manchester United manager owns Harry The Viking with three others, including Ged Mason with whom he also shared What A Friend, who was pulled up when 12-1 third favourite in the 2010 Grand National. Hurricane Fly and Binocular, two former Champion Hurdlers, are among the six possibles for the BHP Irish Champion Hurdle at Leopardstown on Sunday. Trainer Willie Mullins reports Hurricane Fly to be in top form while Binocular will be making his first appearance since finishing fourth to Rock On Ruby in last year's Champion Hurdle at Cheltenham. Hopes for a return to jumps racing before the weekend look to rest with Ayr today, but the threat of frost hangs over the track and a precautionary inspection is planned for 7.30am. Clerk of the course Emma Marley said: "There is no snow lying on the track, but we are forecast a sharp frost and on that basis we have to inspect." Wednesday's card at Exeter and Thursday's Fakenham fixture were abandoned because of snow yesterday and both tracks that are due to race on Friday, Doncaster and Huntingdon, will inspect this morning. The British Horseracing Authority have announced two extra fixtures this week. There will be a "jumpers" bumpers" card staged on Kempton's all-weather course on Friday, while Wolverhampton will host an additional all-weather Flat fixture on Saturday.