Mike GreenawayThe Lions’ decision to send 12 players home from Wales to prepare for this week’s home match against Pau meant the Challenge Cup game against the Ospreys had been surrendered, and only time will tell if Ivan van Rooyen’s investment in the future will pay off.For long periods, the coach would have been proud of the fight his up-and-comers showed in pushing the Ospreys in the Swansea but a 30-14 result against a team languishing in 14th place on the United Rugby Championship points table does not flatter the Joburgers.Van Rooyen has a strategy for the Challenge Cup that…