The Gunners boss has stated that his side are too nice on occasion and were overconfident against the Hammers.
Ronny Deila was always confident that Scott Allan would sign for Celtic.
Sunderland went down 3-1 to Norwich City at home in the Premier League on Saturday.
The Argentine lauded his side’s performance for the first 70 minutes at White Hart Lane yesterday.
The Newcastle United loanee took to social media after scoring twice for the side he is on loan with.
Jose Enrique has been out of favour at Liverpool for some time.
All the latest Sunderland transfer news including Jermain Defoe and Nantes’ Papy Djilobodji.
Crystal Palace’s Dwight Gayle looks set to leave the club this summer.
Alastair Cook has admitted that he had been considering resigning as England’s captain throughout the summer, revealing he decided to stay on the morning after regaining the Ashes last Sunday.
The Etihad Stadium chief has confessed he expects a defensive showing from today’s opponents.