"This is a wonderful chance for my career and I want to take advantage of it.
"If they [Sevilla] respect me they will analyse the offer made by Chelsea.
"I have behaved very well during my four years, so I am just asking Sevilla to behave as well - it is a necessity they look at the offer which has arrived.
"I am not looking to leave Sevilla in a bad way, but I have already said I want to play for a European giant and take advantage of what is going my way at the moment."