3 - but personally I can't see it being anybody else other than Alan Reid (go on Clive, tell me I'm not wrong !)
You probably mean Alan
Reed. He was the singer of Pallas. The other is a Scottish
politician.
Yeah, if it's really true that Rob Sowden is out of Arena, then Alan Reed would be an excellent choice

But I do agree with Erik and Cap:
That's sad and unexpected news indeed. Rob, you'll be missed!
Rob, if you read this, I wish you all the best, you were the perfect ARENA voice and frontman 
Rob has a very special voice and expression which contributed to making Contagion a masterpiece

But I'm aware that in later years he wasnt fulfilled in Arena

Rob, good luck with
your projects, and keep us informed

And Arena, good luck with finding a new singer, and hopefully we'll soon get to hear The Tinder Box

Nicky.