El Cid?

When playing as Spain is there any way to have El Cid join you peacefully?
I know that I can siege Valencia but just as in the movie I do not think it right for Spain to fight El Cid
https://www.youtube.com/watch?v=ArrUq-Tb6DQ

Bribing with the starting diplomat seems futile.

So is there any way ingame, by modding (e.g. an event to have Cid join Spain when Spain is in war with the Moors) - if need by by cheating, to have Valencia and Cid join Spain?

You can definitely do so by modding, to have him directly in your faction.

However - bribing him seems like the best idea to be fair.