Blackpool boss Lee Clark has signed Manchester United midfielder Joe Rothwell on loan until the end of the season.
Newcastle midfielder Moussa Sissoko is happy to stay at the club, despite rumours he is a target for Arsenal.
Andre Santos move from Arsenal to Gremio gathered pace on Sunday as the defender was photographed arriving in Brazil ahead of a proposed move back to South America.
Santos, 29, was signed from Fenerbahce for £6.8million in August 2011.
However, the Brazil international has fallen down the pecking order at Emirates Stadium behind England left-back Kieran Gibbs, and following the deadline day arrival of Spaniard Nacho Monreal is now surplus to requirements.
While there has not yet been any official comment from Arsenal, a picture of Santos arriving in his homeland, where he last played for Corinthians in 2008/2009, greeted by cheering fans was posted on Twitter.
Meanwhile, Arsenal forward Lukas Podolski put a post on his official Twitter account which read: "@Andre-santos27 We will miss you man, I wish u all the very best #Gunner God bless you".
Santos made 26 appearances for Arsenal, scoring four goals. It remains to be confirmed whether the transfer will be permanent or a loan deal.