West Bromwich Albion have signed Colo Colo defender Gonzalo Jara in a £1.4m deal.

The 23-year-old defender has penned a three-year contract at the Hawthorns, which the Baggies have an option to extend for another season.

West Brom manager Roberto Di Matteo told his club’s official website: “Gonzalo is an exciting, quick, technical and aggressive player.

“He’s a Chile international and very versatile, which will give me good options.

“He’s still young and has a strong desire to achieve.

“Gonzalo wants to go to that next level and prove himself in Europe.”

Former Arsenal left-back Sylvinho has joined Manchester City on a one-year contract.

The Brazilian, who previously played for Barcelona, was released by the Spanish giants earlier in the summer.

City manager Mark Hughes told his club’s official website: “Sylvinho has a wealth of experience at the very top level, having represented Brazil and played for some of the very top clubs in Europe.

“When the chance presented itself to bring him to Manchester City as a free agent I saw it as representing excellent business for us. Sylvinho won the European Cup last season at Barcelona and he will strengthen our defensive options.”

Liverpool have strengthened their squad by signing defender Sotirios Kyrgiakos. The Greek international joins the Premiership club from AEK Athens on a two-year deal.

Liverpool manager Rafael Benitez told his club’s official website: “He is a tough defender who is strong and good in the air. He has a strong character and we were looking for these things.

“He can score goals and will be a threat from corners and free-kicks. He’s very strong in defence but he will need time as always to settle into the Premier League. He will be a very good signing for us.

“We knew the player when he was with Rangers and we’ve been watching videos of him at Frankfurt and the national team. Our scout department had a lot of information.

“We’ve talked about the things he’s done before and the things he’ll have to do for us. It was good. He knows what we want and he’s ready to work.”

Striker Kevin Davies has extended his stay at Bolton Wanderers by a season after signing a contract until 2012.

Bolton manager Gary Megson told his club’s official website: “I am really pleased that we could add another year to Kevin’s contract.

“He has been absolutely 100 per cent since I arrived. He is a great leader on and off the pitch – a modern day professional footballer setting a great example and he is fully committed to Bolton Wanderers.”