It is all well and good seeing that video of his great tackles and hearing the comments from posters who regularly watch La Liga to tell us how good he is but we all know there is only one real way to judge a player's ability:
It is all well and good seeing that video of his great tackles and hearing the comments from posters who regularly watch La Liga to tell us how good he is but we all know there is only one real way to judge a player's ability:
Otamendi joined Valencia from Porto and made 35 appearances in La Liga, scoring six goals.
Otamendi said: 'I am here to give my best, to fight game by game and push City to the highest peaks for as long as possible, and I wish we will be able to win several cups and titles. That's the most important. To be here inside a club that looks so wonderful from the outside is a dream.'
Otamendi has 25 caps for Argentina and was a member of the side that reached the 2015 Copa America final in July with City team-mates Martin Demichelis, Sergio Aguero and Pablo Zabaleta.
He also won the Primeira Liga in Portugal in three out of four seasons with Porto as well as the Europa League.
The 27-year-old defender who signed for Manchester City doesn't hang around once he's on board. Last week, amid rumours linking him with City, he told Valencia coach Nuno Espirito Santo: 'Don't put me in the team anymore. There is a lot of money at stake here.'
He lacks inches - at six feet tall he is relatively short for a centre back - but few head the ball better. 'I'm not the biggest defender but very little gets past me in the air,' he says.
That was evident in January when he got the winner against Real Madrid to end their 22-match unbeaten run. He had marshalled the Valencia defence against the might of Cristiano Ronaldo, Gareth Bale and Karim Benzema and then arrived at the right time to score the decisive goal.
He is a big boxing fan and that means not only watching the sport but also using the same training techniques. As a youngster he sparred at his local gym and worked out with other young boxers to build both the speed and power, and the endurance that are now his trademarks. 'The methods are very complete', he says. 'You are working every part of your body.
Sounds good to me welcome Otamendi..