Alexis Sanchez insists he is refreshed and raring to go after a “learning period” at Manchester United last season. Sanchez, 29, scored just three goals in 18 games after his January move from Arsenal and was criticised for a series of underwhelming displays. But after a summer off, with Chile not involved at the World Cup, the forward says he is ready to fire for United ahead of tonight’s Premier League opener at home to Leicester. “I can’t remember the last time I had a break and a long vacation,” the 29-year-old told United’s matchday programme. “It served me well to rest, to clear my head. “I’m already off to a great start. It’s been years since I’ve had a pre-season like this. The first four or five months were a learning period. Now I know my team-mates, I can focus on what I want to win.” United failed to bring in defensive reinforcements on deadline day and are set to face Harry Maguire, one of their targets, at Old Trafford on Friday.