The Arsenal manager says the Chilean's move to the right wing has profited the player.
Rangers beat Celtic on penalties in the Scottish Cup this afternoon.
The Celtic goalkeeper reveals his tactics did not pay off as his side slipped to defeat to Rangers at Hampden Park.
Eric Black has taken caretaker charge of the club's last three games following Remi Garde's departure and the suggestions are that the board could wait until the end of the season to find a permanent successor to the Frenchman.
Sunderland and Crystal Palace are reportedly keen on Lorient forward Benjamin Moukandjo.
Referee Jonathan Moss had an eventful afternoon today.
Liverpool won against Bournemouth in the Premier League on Sunday.
Newcastle United won against Swansea City in the Premier League on Saturday.
Vladimir Weiss stuck the boot into Celtic's Scott Brown for his role in Rangers' opener during the Scottish Cup semi-final.
Chris Wood admits it was tough being on the sidelines but says he finally feels up to speed again after a recent run of games.
'The bank had already begun to make redundancies'.
Victor Anichebe's current contract at Sunderland expires at the end of the season.
Should Liverpool try and beat Southampton to Leeds' Pontus Jansson, as has been suggested in his homeland?
Ibrox side Glasgow Rangers head into their match with Celtic unbeaten under Pedro Caixinha's stewardship so far.
Tottenham Hotspur defender Eric Dier has been linked with a move to Manchester United.
West Ham United loanee Jonathan Calleri has been linked with a move to Inter Milan.
Virgil van Dijk has suitors far more successful than Everton and the club would be wise to focus on more realistic targets.
Valencia wonderkid Rafael Mir is Tottenham's perfect prototype - but he could thrive at West Ham alongside former strike partner Toni Martinez.
Tottenham Hotspur defender Cameron Carter-Vickers has been hailed by Ledley King.
West Ham United striker Enner Valencia is currently on loan at Everton until the end of the season.