Rumors of Harrison Barnes disliking his time at the power forward position have been around for a while now, but the Dallas Mavericks have continued to use him there since signing him. This year, all that could change as Dallas has added the European sensation, Luka Doncic, who is big enough to fill in as a small ball 4.
It seems like the logical way to use Luka defensively is to match him up at the power forward spot. Barnes apparently didn’t like playing there because of the wear and tear it put on his body battling bigs all the time.