Following a drop in ratings during the reality show's live shows, BBC One controller Danny Cohen is apparently considering making switches to the stars on the show, reports the Daily Mail.
Lulu - The singer, currently starring in Strictly Come Dancing, turns 63 on Thursday.
The Eurythmics singer has previously been outspoken about Simon Cowell's talent shows, but it is believed she could be tempted because of her relationship with record label Universal, who work with the show's winning act.
Lulu has previously worked with the BBC as a judge on reality series Just the Two of Us in 2006 and as a contestant on Strictly Come Dancing.
The Mail piece claims that Jessie J may not return because of her rumoured frosty relationship with producers and Cohen. Meanwhile, Reggie Yates's role as co-host is also allegedly under threat.
Auditions details for the second series of The Voice UK were announced and released by the BBC yesterday (June 7), but the coaches are not expected to be confirmed until much later this year.
