The cheaper the bike, the quicker he'll wreck it. All that power going through cheap components and rubbish wheels is not a good idea. I am amazed at the level of this bike for only £300.http://www.decathlon.co.uk/triban-3-roa ... 67038.html
I know it has curly bars but, still a good buy.
Other than that a good old strong MTB with thin, slick tyres and a cassette with close, road going ratios and possible larger chainrings too.
Today's mood... Middling, middling to poor.