Clermont Auvergne wing David Strettle will return to Saracens at the end of the season on a one-year deal.
The 34-year-old flyer is in his third campaign with Clermont after leaving the European champions in 2015, winning the Top 14 title last year.
Strettle, who spent five years with Sarries before moving to France, will be back at Allianz Park for the 2018-19 season as he eyes more honours in the twilight of his career.
The former England international said: "I already have some unforgettable memories at Saracens - they have always had a place in my heart.
"An opportunity arose in France which I took as a fresh challenge, but now can't wait to come home and hopefully make some more great memories.
"Some of my best friends are at Saracens, so I can't wait to get back out on the field and be a part of the same team with them again."
Strettle, Clermont's leading try-scorer in the last two seasons, was on the losing side against his next employers in the European Champions Cup final last May.