Arsenal are weighing up a late move for Domagoj Vida after being told they will have to pay £26.9million to sign the Besiktas defender.

The Gunners had previously indicated they were willing to make a cash-plus-player offer – thought to be Danny Welbeck or David Ospina – but the Turkish club are keen on a straight sale.

Vida is keen on a move to England with Liverpool also monitoring the situation and it remains to be seen whether Arsenal put together a formal offer approaching Besiktas’ valuation in the final 36 hours of the transfer window.

The Gunners have already spent more than £70m this summer and it is understood any further incomings are dependent upon players being sold.

Calum Chambers on Tuesday left to join Fulham on a season-long loan but the Gunners are willing to listen to offers for Welbeck and Ospina as they seek to raise funds for a move; Lucas Perez’s imminent £5m move to West Ham will help in that aim.

It is possible Ospina could move to Besiktas in a deal separate to any developments over Arsenal’s pursuit of Vida, who excelled for the Croatia side which reached the World Cup final last month.

Chambers’ departure hints at a possible centre-back addition but Gunners boss Unai Emery is believed to content with the composition of his squad should the conditions to sign Vida not materialise.

Vida is under contract until 2022 and is thought to be a target for several clubs in Italy and Spain, putting Besiktas in a strong negotiating position with the Premier League clubs at a disadvantage due to the early closure of the window in England compared with their European counterparts.

Arsenal have already signed Sokratis Papastathopoulos from Borussia Dortmund to strengthen the heart of the defence with Shkodran Mustafi – whose Arsenal future is not entirely clear, although he has played a prominent part in pre-season – and Rob Holding among the current options.

However, Emery will be without Laurent Koscielny until the New Year due to an Achilles injury.

Meanwhile, Ospina’s prospects of first-team football have diminished following the £19.3m arrival of Bernd Leno from Bayer Leverkusen.

Petr Cech has impressed in Arsenal’s pre-season matches and the 35-year-old told Standard Sport last week that Emery had not established a clear hierarchy among his goalkeepers .

However, Cech and Leno are expected to fight it out to become Arsenal’s No1 with Ospina pushed further down the pecking order. He has been told he can find a new club and with two years left on his existing deal, Arsenal are seeking a fee in the region of £6m.