"It is very unfortunate [for Thornton] but I am absolutely delighted," Maguire said. "He is a very good horse and anyone would be delighted to ride him. I haven't ridden the horse before but he has won some very good races and beaten some very good horses. I am very impressed with him.
"I don't see the two miles being a problem," Maguire added. "I have seen him win a few times and have been very impressed.
"Istabraq was very impressive when winning the Champion Hurdle last year but some people say that French Holly may be the horse to go and beat him - I'm looking forward to it."