Argentina holding midfielder Yacob's discipline has allowed Jones to roam forward and play in a more offensive role, which is something he has relished.
Yacob signed for West Brom in July last year from Argentine club Racing Club de Avellaneda and Jones believes he has been a great success in his Barclays Premier League debut season.
"With the signing of Claudio, I feel I can attack that little bit more with the assurance he's just going to sit in there like he's done so well this year," Jones told the club's official website.
"That's been nice from my point of view. Playing football like that means I've been able to attack a little bit more.
"Claudio's been such an important part of our season. He's freed up Youssouf (Mulumbu) a little bit to get more involved and get more creative going forward.
"He just sits in there and you just know he's going to be there filling in. He's done superbly this year.
"I think him and Youssouf, in their first season together, have built up a great partnership in the middle that has worked really well."
- Sports & Recreation