MARK WALSH will partner Colbert Station if Tony McCoy opts to ride Double Seven in the Crabbie’s Grand National at Aintree on Saturday.

Of the JP McManus-owned duo, McCoy has admitted to having a slight preference for the latter, trained by Martin Brassil.

Should that be the case, Walsh, who is used regularly by McManus in Ireland, will get the leg-up aboard Colbert Station, who unseated McCoy at The Chair in last year’s Grand National.

Trainer Ted Walsh: ‘‘He (Colbert Station) is all ready to go.

‘‘I haven’t spoken to Tony about what he’s riding, though. I don’t expect to speak to him until I see him at the races on Thursday and he’ll have made his decision by then.

‘‘If he picks Double Seven then Mark will be riding ours.

I’ve no problem with that at all.

‘‘Mark rides most of JP’s horses when Tony isn’t in Ireland anyway.’’ Owner Andy Stewart admits the National has never been a lucky race for him, but he has his best chance for some time in the Paul Nicholls-trained Rocky Creek.

‘‘My Will finishing third to Mon Mome (2009) is the best I’ve ever done,’’ he said.

‘‘After Daryl Jacob finished second on Rocky Creek in the Hennessy and then second in the Argento he said we should be thinking of the Grand National and not the Gold Cup.

‘‘Unfortunately for Daryl he is now injured, but we’ve secured Noel Fehily who is riding the crest of a wave at present.”