The 20-year-old has impressed in the few months he has been a first choice in the senior side for the club from Spain’s Basque country.
Martinez has made a name for himself by showing poise and versatility, most notably an ability to move up into midfield from either centre-half of left-back.
He is a Spain Under-21 regular and forced his way into the Sociedad team after playing exceptionally well in their ‘B’ side.
Martinez is quite clearly a gifted footballer and, having come through the ranks of the Spanish youth system, he is obviously very technically proficient.
However, it is his physicality that may be what is attracting the reported interest from the Premier League clubs.
While he is not the quickest of defenders, Martinez has sufficient pace and is strong into the tackle.
The Sociedad centre-half is good in the air and can impose himself physically, although he is not the tallest of defenders and the greater aerial tendencies of the Premier League could provide some problems.
He remedies this by having good spring when he jumps, much like current Gunners defender Thomas Vermaelen.
Both Chelsea and Arsenal would be making a solid investment for the future, as Martinez is by no means the finished article but does have tremendous potential.
His versatility is something that would likely attract Arsene Wenger, who always looks for the potential to swap positions in a player. Although Arsenal have a number of young and promising defenders and another one is not really what they require at the moment.
For that reason, a move to Chelsea would most likely make more sense, especially as being par of Andre Villas-Boas’ much spoken of ‘project’.
Inogo Martinez looks as though he would be around investment for any top side, but he may not be quite ready to make the move to the Premier League.