Andrews agreed a short-term deal at The Hawthorns in January having arrived on a free transfer from Blackburn, making 14 appearances for the Baggies and scoring twice.

He started all three of his country’s games at Euro 2012, seeing red in the final Group C game against Italy, and the 31-year-old will offer vast experience to Owen Coyle’s side.

“We are pleased to have been able to bring in Keith early in the transfer window as there were a number of clubs interested in signing him,” Coyle told Bolton’s official website.

“He is highly experienced both in domestic and international football and he will bring strength, competition and a goalscoring threat to our midfield.”