Morning, Ron, and nice to see your brain working so sharply this early in the day. I know nothing of Magillen, but - and this isn't exactly inside information, but it's fairly well-connected - I know that top-weight Jallota was much fancied for the Richard III* listed race at Leicester this last Saturday. I was all tuned up to back it, but it was taken out early in the morning because of (allegedly) unsuitably heavy ground. Ryan Moore was booked to ride, and there did seem to be considerable stable optimism overnight.
Its appearance today (first time on polytrack, if I've read the record correctly) looks to me very like a consolation-prize effort to cash in while the beast is fit, and it's my view that Doyle rides this Kempton track as well as anyone. It's currently a suspiciously-unanimous 4-1 across the board, which isn't ungenerous, and if it can run to within a pound or two of its 109-rating, it should be able to win this. That said, they don't all take to polytrack, and I think it would be sensible to watch the betting until they're at the post; if it doesn't drift, it should be worth a bet.
*Its withdrawal also prevented my posting a carefully-honed joke about being drawn in the car park. Racing can be a cruel mistress sometimes.