Signing Isco would be one of the signings of the summer. The closest you can get to David Silva plus I am sure he would learn a lot from him and further develop his game. Pep is probably a big fan, he is 25, has all kinds of skills and can play in midfield as well as on the wings and more importantly is a goal threat.
Regarding the CL final played in Cardiff. Zidane thinks Bale will be fit for the final. If fit he is starting, there is no question about it. First choice midfield is Casemiro, Kroos and Modric and first choice attack is Benzema (amazing piece of skill to set up the goal last night btw), Ronaldo and Bale. Despite Isco's form and the fact that he helped Real get to the final he will be benched for it. Real will not bench their world record signing for the CL final that is being played in his home town. Its something Bale has been dreaming of playing since the venue was announced. If Bale was fit he would of started in both semi final games.
Given the choice of Isco or Bale, Real Madrid choose Bale every time. The new deal is on the table and has been for a while, if Isco is waiting to see if he will start the CL final he will be disappointment. Many are so sure he was going to sign a new deal, why hasn't he signed it yet then. If he was so sure of staying, the contract would of been signed weeks ago. There are definitely some doubts in his mind. Has a year left on the contract, easily worth 30-40m. Hopefully Pep and Txiki are working closely to get this deal done.