Harlequins director of rugby Conor O'Shea has revealed that signing inside centre Jamie Roberts would be a "big statement" about their intentions.
The 2013 Lions tourist, who has been linked with the Ospreys, Cardiff Blues and Quins, has reportedly held advanced discussions with the Premiership outfit.
And when asked whether Roberts would be a deal he would like to get done, O'Shea said that the decision was now in the Racing Metro player's court.
"If we could get someone of Jamie's ability it would be a big statement of what we are about," the Harlequins boss told BBC Radio 5 live on Thursday.
"But that's his decision, not mine, and we will respect whatever he does."
Harlequins, who are looking to strengthen their squad after a disappointing Premiership campaign, are clearly targeting their midfield after Winston Stanley's deal was announced. However, the 28-year-old Roberts' possible arrival would be a significant coup for the club ahead of next season.
"We would love to have someone of his ability, mentally and physically," O'Shea said.
"We've got Adam Jones coming in to support people like Will Collier, Kyle Sinckler and Matt Shields. We've got James Horwill coming in supporting George Merrick, Charlie Matthews and Sam Twomey.
"We want players of that ability. It's his decision, and I know it's a big decision for Jamie."