[Radio_man]

Huw IS the BBC. Fortunately I can't see him going anywhere for at least the next few years.

I agree with you that Huw is very much seen as the 'BBC' and that would've only been cemented during September of last year. He really is in a class of his own.  

However he did say himself that he'd like to see some of his other colleagues have a go at the top job, noting he'd done it for x amount of years.

By 'the top job', Huw was referring to presenting the nightly 10pm news, which he has now done for 20 years. 

He waited patiently for years for Dimbleby to step down as anchor of elections and royal events. Now that Huw has taken over that role on the BBC in the last 5 years, I can't see him giving it up to do a podcast with Global.
If Huw does step down from the 10pm news this year, there isn't any obvious regular presenting slot for him to move to, but he may well be happy with having less regular work and becoming the BBC's senior presenter of major news, political and royal events, elections, and occasional documentaries, as well as maybe doing more work for BBC Wales.