Arbeloa and goalkeeper Casillas have emerged from a fractious season in Madrid, where the latter was controversially frozen out by manager Jose Mourinho.
Arbeloa was supportive of Mourinho and said: "I don't have a problem with him, we have a good relationship and it won't damage the national team.
"I have a professional relationship with some of my team-mates and I'm friends with others - just like in any workplace.
"Relationships change - they go through ups and downs."
Former Liverpool man Arbeloa does concede he has work to do with Casillas, though, adding: "It can't have been an easy season for Iker. Will we talk about it? We do probably need to straighten things out.
"I did not name Casillas or talk about him indirectly. Too much has been made of it."