Exeter have announced the signing of Scotland international full-back Stuart Hogg on a two-year deal from next season.
Hogg, who has won 63 caps and toured twice with the British and Irish Lions, will move to Sandy Park from Glasgow Warriors.
The 26-year-old is Exeter's first new signing ahead of the 2019-20 campaign.
Hogg has spent nine seasons with Glasgow and established himself as one of the most exciting broken-field runners in world rugby.
"I am very excited about the move - it's a great opportunity for myself and my family," Hogg said.
"Like a lot of people, I have seen how the Chiefs have risen over the last few years, and I am a big fan of the way they play their rugby.
"This is a decision that has taken a great deal of thought, as I've loved my nine seasons at Glasgow Warriors.
"I said I would decide my next step for family and rugby reasons, and I feel now is the right time to gain new rugby experiences and push myself in different situations where I will be challenged and hopefully improve further."
Exeter rugby director Rob Baxter described Hogg's signing as a statement by the Chiefs.
"We've tracked him for some time and we actually wanted to sign (him) before he signed his last contract at Glasgow," Baxter said.
"At that stage, it wasn't the right time for him to move, but now it is and we feel he will be a fantastic addition to our squad.
"Yes, it's a statement on our part.
"But anyone who knows us and where we want to go will understand that for us to move forward and win trophies - which is undoubtedly what we want to do - we have to back ourselves fully, and that means bringing in players who we feel will take us to that next level."
Wasps have announced the signing of Italy centre Michele Campagnaro.
The 25-year-old has agreed a deal until the end of the season and will link up with his new team-mates after the autumn internationals.
Campagnaro was available as a free agent after last month being released from his contract with Exeter, for whom he made 27 appearances after joining from Italian club Benetton Treviso in 2015.
Campagnaro, who has scored nine tries in 36 matches for Italy, said: "The opportunity to join Wasps was something no player can turn down.
"Wasps play an exciting brand of rugby and have a number of talented individuals. I'm very much looking forward to testing myself and playing at the Ricoh Arena."
Wasps director of rugby Dai Young added: "Michele is an experienced international who predominantly plays at 13, but having also played on the wing and at 15, his versatility will be of huge benefit to the team throughout the season."