"I have watched the last few games that David has played for AC Milan and I am very happy with his performances. He's played very well," Capello said in the Sunday Mirror.
"When I look at it, player age does not come into it. I'm looking for the best players. Italy still pick Fabio Cannavaro and he is 35 years old. I'm looking at other things."
Capello said he was also worried about the quality of Major Soccer League in which Beckham will play when he returns to Los Angeles.
"Beckham made a personal decision," added Capello.
"The standard in America is different. In this moment it is important for him to play in Europe -- not only Milan but Europe.
"American football is not at the same level as Italy, Spain, Germany and England, that's for sure."