And the 31-year-old is all praise for Eastwood, saying he is a fantastic mentor on set, reported Daily Star.
"Just to watch him lead by example. And I've been working for two decades, and that's a long time, but still I'm so young so it was nice to see a leader like that just come in and lead by example and continue to be supportive of everybody else around them. That was great.
"Clint, he is and he was a great mentor on set - we would play golf every weekend together, so it's kind of funny because we were like actually buds on the movie. And it really helped Clint and myself, it really helped our relationship on film," Timberlake said.