Conor McGregor has backed Tyson Fury ahead of his return to the ring on Saturday.
Fury will fight for the first time since his controversial draw with Deontay Wilder last December when he faces unknown contender Tom Schwarz.
And as he worked out in Las Vegas, McGregor hailed him as the best heavyweight of his era.
The former two-weight UFC champion tweeted: "This is what fully committed pad work looks like, amazing!
"Welcome to The Mac Life “Gypsy King” Tyson Fury ! Leading the game from all angles.
"Enjoy Sin City my man; we are not here for a long time, we are here for a good time. Atta boy Tyson, The number one heavyweight boxer of this era."
Fury worked out on the pads with trainer Ben Davison and said: "I plan to box until I can't box any more.
"I feel fantastic at the minute. Boxing keeps me really happy, and I'm very happy with where I am in my life at the minute.
"I want to box on; I don't see myself retiring. I just turned 30 years old; I've got over 10 years left in this game, so you'll have to keep seeing me for the next 10 years, I'm afraid."
Schwarz is undefeated but has fought only modest opposition and is unlikely to trouble Fury.
The German said: "I'm fighting for my family and my country.
I have a lot of inspiration and I'm ready to shock the world.
"This is a great time in the heavyweight division, and I am happy to be part of it.
"On Saturday night, it's my time. I am prepared. Tyson Fury picked me for a reason, and I promise a great fight, a dramatic fight, and a memorable moment for all boxing fans."
