The newly-promoted side have signed the former Barcelona and Manchester United goalkeeper on a two-year deal.
Swiss left-back has impressed club's scouting team.
As the halfway point of the 2016 MLS season rounds into view after a pause for the Copa America, this season is looking as hard to predict as any other.
The £10 million signing from Crystal Palace is keen to follow in the footsteps of such former Magpies heroes as Alan Shearer.
The Whites owner is not happy with the 22-year-old or his agent, who also represents ex-Elland Road defender Sam Byram.
The Reds have agreed a fee with Bournemouth for the sale of the young winger.
Welcome to this evening's transfer round-up. This edition features 'Axel Witsel linked to Chelsea again' and 'Borussia Dortmund's Neven Subotic interesting Sunderland?' plus more, so delve in below.
Leeds may be set to receive an unexpected cash injection.
Tottenham have reportedly succeeded with a new bid for AZ Alkmaar's Vincent Janssen.