Wigan Athletic pulled off two transfer deadline day coups as they lured Celtic's Shaun Maloney and Chelsea full-back Patrick Van Aanholt to help boost their Barclays Premier League survival bid.
Maloney has signed a two-year deal at the Latics, while Van Aanholt joins on season long-loan following spells at Newcastle United and Leicester City.
The pair bring Wigan's total dealings in the transfer market to six after Ali Al Habsi, David Jones, Nouha Dicko and Albert Crusat joined earlier this summer.
Martinez said: “We’re delighted to welcome Shaun, who has great experience and is at the perfect age to come and bring something different to our squad.”
“His previous experience in the Premier League will be a great platform to start his Wigan Athletic career, and now we want to make sure he enjoys that homely feeling at our football club and be able to bring his magic to our strong group of players.
“Patrick is a player with enormous potential. Technically he is very gifted, very comfortable in possession, and he uses his physicality and intensity to defend very effectively," he added.
“He can play left-back or left wing-back, and without a doubt he’s got a phenomenal career ahead of him.
“Like Tom Cleverley last year, he is a young player who is hungry to learn his trade, and I feel both parties can benefit hugely from the move.”
The 28-year-old Maloney has Premier League, Champions League and international experience to his name and won four SPL titles during his combined 11-year spell at Celtic Park.
Despite his wealth of experience, the Scot is itching for a new challenge.
“As soon as I found out about the move I got excited,” he said.
“The gaffer likes to play the right way and there’s a tremendous squad here, full of great potential.
“Firstly I need to focus on winning a place in the team and doing the best I can for the team.
“It’s an exciting challenge now and I can’t wait to get started.”