The transfer was confirmed when Higuaín's name appeared on a list of completed deals on the Serie A website.
The transfer was confirmed on the club's website after Watford had progressed into the fifth round of the FA Cup with a 1-0 win at Nottingham Forest.
The transfer was confirmed on the same day that the Arsenal manager, Arsène Wenger, restated his belief that both Cesc Fábregas and Samir Nasri would remain at the club, despite ongoing speculation linking them with big-money moves away.
There was uproar when the free transfer was confirmed, such is the rivalry between Spartak and Zenit, and stickers were plastered around the city reading "No room for pigs in St Petersburg".
It was swiftly removed – generally a pointless move given the alacrity with which social media gaffes are captured for posterity – but the transfer was confirmed via official channels hours later and the video, which Adidas subsequently tweeted, now takes pride of place on the club's website.
With both Wolfsburg and Borussia Dortmund interested, a battle was set to ensue for the former Bayer Leverkusen star, but it appears that Wolfsburg have won the race for his signature after his transfer was confirmed on the DFL transfer list earlier today.
