Christophe Berra has urged Hearts to sell him if a "bigger" club make a bid for him.
The club's 23-year-old captain, who has been linked with a January move away from Tynecastle, believes he has to leave the Clydesdale Bank Premier League in order to fulfil his potential.
The defender said: "I've never hidden the fact I have aspirations to go to play at the highest level. If an opportunity did come, I'd like to think the club would give me that chance. The SPL is a good league and Hearts are a great club, a big club, but there are bigger clubs and bigger leagues in the world."
He added: "If you want to prove yourself against the best, you've got to take that chance. If it did come up, I would like to go.
"There's a week to go in the transfer window but it's not down to me really. There's a lot of speculation. It depends if a club makes a bid for me and whether it gets accepted. If it does, we'll see what happens.
"At the moment, I'm at Hearts and I'm still giving 110%. I still want to improve. I'll be glad when the window closes to be honest because I'll know where I am, whether I'm still here or away.
"If I'm still here, it won't affect me one little bit; I'll still give everything for this club and for the manager. It's not in my hands; it's down to people at other clubs if they want to make an offer and Mr Romanov if he accepts."
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