Boro have completed the deadline day capture of Watford's Algerian international Adlene Guedioura for an undisclosed fee.

The 31-year-old midfielder has put pen to paper on a two-and-a-half-year deal at the Riverside.

Guedioura has made over 170 appearances since arriving in England in 2010, for Wolves, Nottingham Forest and Crystal Palace as well as the Hornets.