What kind of spider is this? (Eastern Spain)

Hi, I was going for a walk and found this kinda big spider (5 cm legs included) by the entrance of an apartment building. I caught it with a bottle I had with me and I'm keeping it in a box. I don't usually do that of course, but did so since 1. I was pretty sure eventually somebody would be going to k-ll it, and 2. I don't know if it's a native species.

For the latter reason, I'm here to ask you, what kind of spider do you think is it? Thanks in advance!