Arsene Wenger has already signalled his readiness to splash some serious cash in the forthcoming transfer window, but even then free transfers would be a boon, specially when players are from Real Madrid.
Last summer Real Madrid offloaded two top-class players—Robben and Sneijder—who then went on to inspire their respective clubs, Bayern Munich and Inter Milan, to the the Champions League semifinals—a feat that Real Madrid failed to achieve even after having some of the best players in the world.
Both Robben and Sneijder are playing the best football of their lives, so it wouldn't be a bad idea to sign some of the discarded players from Real Madrid.
Christoph Metzelder is the one widely touted as a likely name on Wenger's wish-list. His contract runs out in the summer and it won't be renewed. So, the German footballer is free to join any team of his liking and the defensive worries at the Emirates are no secret. Hence, it would make sense if Wenger approaches this 29-year-old centre back.
At present, he's warming the benches at Real Madrid. Since joining from Borussia Dortmund, Metzelder hasn't featured in many games and his injury records are baffling. Injuries are a common phenomenon at Arsenal and one more name to that everlasting injury list wouldn't be a bad idea at all.
Metzelder is a cheap option, but it may be the wrong one because there's no guarantee about his fitness. Wenger will surely consider this option because he can save a few pennies. It would be a big surprise if the Frenchman ignores this tall German defender.
In my opinion, Wenger should sign Metzelder. However, that's not going to ease the defensive problems. Another established central defender is obviously needed.
Metzelder not only offers the experience at the highest level, but he can also contribute with the ball. He wouldn't be a liability like Silvestre, who Wenger feels is important to have in the dressing with very little effect on the pitch.
So, why not sign a player who can put in some decent performances as well as help the young up-and-coming defenders like Bartley and Nordtveit?
Two free signings in the same transfer window! Not bad at all. Every penny saved is every penny earned!