The former Tottenham boss also believes forcing the player to stay would be problematic for manager Brendan Rodgers.
The Gunners goalkeeper has praised the Chilean following his impressive first season in the Premier League.
Captain Michael Bradley and goalkeeper Brad Guzan both starred as Jurgen Klinsmann's men secured a shock 2-1 friendly win in Cologne.
West Ham's bid for Andre Ayew reportedly failed due to Swansea's wage offer.
Sunderland striker Steven Fletcher is reportedly keen on joining Celtic.
The youngster made his Premier League debut in March against Tottenham Hotspur and is targeting more of the same in the future.
The German World Cup winner has praised the duo after their emergence in the Arsenal first-team last season.
The Croatian and his Besiktas side impressed in several matches against Premier League opposition last season.
Newcastle fans were fairly split as Steve McClaren arrived as the club's new manager.
Edin Dzeko is on Manchester City's for-sale list this summer - but Liverpool are no longer said to be in the running.
Liverpool's Martin Kelly has named Manchester United treble winner David Beckham as his dream teammate.
There are strong suggestions Christian Benteke will be offered a new deal to stay at Aston Villa - But what about the detail being proposed?
Liverpool kit sponsor Warrior Sports have unveiled the new kit for the 2013/14 season.