Kane's loans failed. He had 2 shit loans and a decent one at Millwall, then after his latest loan move failed at Leicester, his youth coach, Tim Sherwood got the Spurs job and gave him the chance he deserved. Drives me mad when people point to Kane as proof of the loan system working. Maybe if Simon Davies takes over from Pep the comparison will hold more weight, until then, the scenarios aren't comparable. To add to your point about Beckham, he had been playing in the old reserve league with actual United first team players fighting for a place in the team, and against other professionals fighting for starts in their teams, so the players were much better prepared for a loan.