It would be a point or two either way like most of their big fights. No sense in firmly standing beside either.
You'd have to favour McCallum here. His run at Jnr Middle was awesome and he figures all time at the weight. In saying that I haven't seen anyone look good against Lara yet (nor clearly beat him). He's just a skilled, technical southpaw with great movement ie a nightmare for anyone to look good against. I'll go with the safe bet and pick McCallum by decision but I think he'd find Lara to be a complete pain in the arse to fight as well.
It would be a boring fight, but McCallum prevails. Lara does not have the power to remotely hurt McCallum. If McCallum was angry or motivated, he would probably stop Lara late. But, more likely he just wins a decision in a stinker (like almost all of Lara's fights outside of Hurd)
Theres no case to be made for Lara winning. The only question here is whether or not Lara lasts the distance, and that depends on him. If he stood his ground, McCallum stops him late. If he gets on his bike and goes into survival mode, then McCallum by commanding UD. Either way, these are two different levels of fighter.
Just Saying: McCallum L Kalambay McCallum SD Kalambay McCallum SD Graham McCallum Draw Toney McCallum Maj dec L Toney McCallum comeback ko of Curry Lara robbery L to Williams Lara tech draw Vanes Lara SD L to Canelo Lara SD L to Hurd Lara Draw Castano They usually fought on pretty even terms with their best opponents.
I actually think this would be a much tougher fight for McCallum than most people think. McCallum tends to be flustered by guys who use their feet to box on the outside and I can see McCallum getting frustrated. I still think that McCallum edges Lara in a 8-4 or 7-5 decision win.