The move brings an end to his four-year stint in English football and links him up with manager Steve McClaren who needed to replace striker Edin Dzeko.
Also available is a Program Monitor widget for your homescreen that shows the number of active applications at any given time and links you into the same Task Manager menu.
United's chief executive David Gill preferred to concentrate on manager Sir Alex Ferguson's close links with the Scottish club and his friendship with Rangers boss Walter Smith, who was briefly assistant manager at Old Trafford in 2004.