United have been back at their Carrington training complex for a number of weeks now and have been stepping up the intensity ahead of their top-flight return on Friday night.Ole Gunnar Solskjaer's side head to Tottenham in their first game since the coronavirus outbreak brought football in England to a halt back in March.Prior to football being suspended, United were 11 games unbeaten and sat just three points behind Chelsea, who currently occupy the final Champions League place in the Premier League.Get the latest breaking Manchester United news and analysis every day direct to your inbox with our free MUFC newsletterSign up here - it only takes a few seconds.And Van der Sar believes United must get off to a good start in their opening few.