Sunderland have completed the signing of Celtic right-back Adam Matthews for a fee of £2million.
Diego Poyet is determined to establish himself in Slaven Bilic's West Ham side this season and avoid another loan spell.
Swansea defender Jazz Richards has joined npower Championship title chasers Crystal Palace on loan for the remainder of the season.
Richards, who can play at full-back and in midfield, has been brought in by Eagles boss Ian Holloway to replace David Wright after he was allowed to leave the club.
The 21-year-old is expected to be available for Palace's next game against Huddersfield on Wednesday.
"Swansea were happy to let me go out on loan and when I spoke to the gaffer here...it was a great opportunity for me," Richards told the club's official website.
"It's a brilliant club to be coming into, sitting in the top six of the Championship.
"As a player you want to be fighting for a place in the Premier League and hopefully I can play my part in the club getting there."