Both Madrid outlets agree: Real Madrid will sign David De Gea no matter what happens with Iker Casillas this summer. Manchester United will ask for €40 million in order to let De Gea go, according to Marca. Real Madrid could try to reduce that price by including Fàbio Coentrao in the talks, as the British club are interested in signing the left-back. It's quite obvious that United don't need to sell, so expect intense negotiations between the clubs.
Meanwhile, AS and Sky Sports' Guillem Balagué reports that De Gea's future will not be influenced by what happens with Iker Casillas and Real Madrid. It seems that the Spanish captain is set to leave the Spanish capital this summer, but if he finally doesn't, De Gea could still be Real's goalkeeper next season. That would create a huge controversy on their battle for the starting spot and a public debate that would not be constructive, and that's why Real Madrid will try to offload Casillas.
Real Madrid will end the season this next weekend and it will be interesting to see what happens immediately after.