"Discussions/contacts between Juve and Chelsea for Timo Werner started yesterday," Fabrizio Romano tweeted.
"Juve are exploring this idea alongside Álvaro Morata, top of the list for Allegri.
"Chelsea could let Timo go on loan this summer, more to follow also on other clubs soon."
Timo has scored just 23 goals in 89 appearances for Chelsea since his move back in 2020.
The Blues have signed Raheem Sterling and the Englishman's arrival could see Werner's playing time further reduced.