It's a bit of a crap title by the Telegraph isn't it? I mean, he's not really tipped. RTD casually mentions he would have liked him as the next doctor, but RTD won't even be in charge at that point....if Moffet had been saying it, well that's a different story. It's a bit of a 'Sun' story
Oh, and agree with Cappuchino, Merlin is/should be way, way older than Arthur (I'll still give it a try though)