Arsenal legend Robert Pires claims that the club are "already regretting" letting Aaron Ramsey leave the Emirates for Juventus.
The attacking midfielder joined the Italian giants this summer, having signed a pre-contract with the Serie A club earlier in the season.
A Gunners deal was on the table for Ramsey to sign, before it was removed before Christmas.
Ramsey will link up with the likes of Cristiano Ronaldo and Paulo Dybala in Turin after more than a decade in North London.
And Pires reckons the Gunners are ruing their decision to let the Welshman's contract run down already.
“I don’t think it’s an opportunity but rather a great chance for him to play for a big club like the Bianconeri,” the Gunners legend told Tutto Juve .
“Tactically Aaron will have a lot to learn, but technically he’ll keep developing every day alongside some great players. He made a really good decision going there.
“When you change country, you always change your way of playing and you always have to adapt to your new surroundings.
“Aaron is a very intelligent lad so he can adapt quickly, but his team-mates have to help him.
“Arsenal are already regretting his transfer because he was a really important player for them.
“Aaron already knows it’ll be difficult to replace (Claudio) Marchisio, since he played at Juventus for more than a decade.
“That’s why the fans will have to give him some time and they’ll have to wait for him, but the goals will come, you’ll see!
“Juve can win the Champions League next season, above all if they sign Rabiot and Paul [Pogba] too.”
Ramsey is still recovering from a hamstring injury he picked up for the Gunners in the Europa League against Napoli, forcing him to miss Wales' qualifiers against Croatia and Hungary earlier this month.
