ARSENAL’S move for Viktor Gyokeres is at risk of collapsing, according to reports.
Mikel Arteta appeared to have finally landed the striker after the two clubs agreed a £63.5million fee.

But as negotiations rumble on a disagreement has emerged over Sporting’s bonus demands, report Portuguese outlet Record.
Sporting are understood to want £8.7m in add-ons on top of the initial fee.
Arsenal reportedly disagree on the nature of those bonuses and which clauses will be included in the deal.
And that means the transfer is in danger at collapsing at a late stage.
Sporting president Frederico Varandas is reportedly not budging from his stance.
And he hopes a stall in negotiations will encourage a late bid from other interested clubs.
Gyokeres, 27, has his heart set on a move to the Emirates and is believed to have agreed a five-year contract.
Just over the weekend, Varandas said Gyokeres was facing disciplinary action after failing to report for pre-season training in the Algarve on Saturday.
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Gyokeres, who scored 54 goals in 52 games during last season’s league title and cup double, has yet to publicly explain why he has not turned up for pre-season.
Varandas told Portuguese news agency Lusa that “no one is above the interests of the club”.
Arsenal hope to wrap up the deal in time for the Swede to join their pre-season tour of Asia at the end of the week.
The Gunners also agreed a £52million deal for Chelsea winger Noni Madueke, who left the Blues before their Club World Cup final on Sunday.