Bystrov returns to Zenit from Spartak
On Friday Zenit announced on their website that they had signed a five-year contract with the speedy winger only for Spartak to issue a denial. A few hours later, however, the Moscow club confirmed the deal.
Bystrov, 25, a product of Zenit's youth system, joined Spartak in 2005 in a move that angered St Petersburg fans.
Media reports said big-spenders Zenit had paid 15 million euros for Bystrov.