Celtic have signed former Arsenal and Liverpool midfielder Alex Oxlade-Chamberlain.

The England international, who was a free agent, has joined the Scottish champions until the end of the season, with the option to extend his stay by a further 12 months.

Oxlade-Chamberlain is the fifth player to be signed since manager Martin O'Neill returned for his second interim stint this season.

Sky Sports News revealed Celtic's interest in the 32-year-old earlier this week, with O'Neill confirming the player wanted to move to the club after fresh talks on Friday.

He had been training with former club Arsenal since mutually terminating his contract with Turkish side Besiktas in August.

The 35-times capped England player joins new loan signings Tomas Cvancara, Junior Adamu, Joel Mvuka and Benjamin Arthur as the Hoops look to catch leaders Hearts in the Scottish Premiership title race.

Julian Araujo also joined Celtic on loan from Bournemouth during the January transfer window while Wilfried Nancy was in charge of the side.

He could make his debut in Celtic's next league match on Wednesday as they face bottom-side Livingston, before a trip to second-bottom Kilmarnock on Sunday - live on Sky Sports.

However, Oxlade-Chamberlain will not be able to feature in the Europa League knockout play-off match against Stuttgart that follows, as his registration was not completed in time.

Instead, O'Neill has added Cvancara, Araujo and Adamu to his European squad, meaning Deadline Day arrivals Arthur and Mvuka also miss out.