In your opinion he would be
That's all we have, opinions.
If the package is right then I can see it helping ABW. It's clear Ole doesn't have faith in Williams as his game time has been very limited.
Trippier has just won the league in Spain, is an international and has some of the qualities we lack in a RB.
I'm no AWB hater but he did play too many games last year. A player like Trip wouldn't halt his progression but lighten the load/pressure.
With 78 assists and 10 goals in his career, he would offer the balance we have lacked this year. AWB still has a big part to play with the defensive qualities he has too. Trip has also played 15 times on the right this season grabbing 4 assists, just another option.
Edit: I don't think Trippier is the best Rb in the world but if the numbers that have been reported are correct, it seems a good deal.