Confusion surrounds Andrei Arshavin's proposed transfer to Arsenal after Zenit St Petersburg announced a fee had been agreed for the Russia international.
However, the Gunners have still to confirm whether the transfer has actually been completed.
"The fundamental understanding over the transfer of the player is achieved between the clubs," read Zenit's statement.
"At the moment the basic obstacle in realisation of the transaction is Andrei Arshavin's personal requirements."
Meanwhile, the midfielder told Russian newspaper Sport Express: "I'm waiting for a final decision.
"The talks don't depend on me. I haven't been in touch with the club management, so I haven't heard a clear 'yes' or 'no' yet."
Meanwhile, Czech Republic international Tomas Rosicky is believed to have returned to training following his long-term injury problems.