In less welcoming news, Sanchez has reportedly accepted a 16-month prison sentence after defrauding the Spanish tax authorities of nearly €1 million (£890k). "We look forward to the remainder of the season with confidence".
Sanchez had always been expected to join Premier League leaders Manchester City as his Arsenal contract ran down.
The Chile global arrived at Old Trafford from Arsenal in a swap deal which saw Henrikh Mkhitaryan move in the opposite direction.
Woodward, a marketing man by trade, initially attracted plenty of criticism from supporters after replacing David Gill, but his role in ensuring United - unlike, say, Liverpool - remain a global financial superpower in an era without Premier League titles, capable of making someone the highest paid player in the game, deserves enormous praise.
The signing of Alexis Sanchez set a huge new record for Manchester United shirt sales in January, executive vice-chairman Ed Woodward has revealed in a conference call to discuss the club's half-year results.More news: 'I'm sorry': Mom gives birth, abandons baby in airport bathroom with note
Sanchez's United contract, reportedly worth £450,000 per week, puts more strain on a wage bill which already made up half of club costs and rose 9.4 per cent to £69.9m in the three months to 31 December.
Sanchez has also been quick to make an impact on the field also, as he netted in the Red Devils' 2-0 win over Huddersfield last Saturday. It was the most shared United Facebook post ever. Thanks to reform in the USA tax code, the club suffered a £21.1 million half-year loss at the back end of 2017.
Woodward said not only had Sanchez smashed United records, but the social media interactions that followed his signing far outweighed those concerning Neymar's world-record move to PSG from Barcelona.
The New York-listed club said this would help them long term but required an accounting write-off of £48.8m.
In 2016, Sanchez was first denounced. The most retweeted United post ever.