"Liverpool sent a £20million offer and they paid £9million for me, so they would've earned twice the amount," he told the Croatian media.
"At this point, I don't know what I'll do and I don't like it. It was unbelievable that a few days ago I had an offer of £20m. It was in the morning and by the afternoon the club had said I was not for sale. Frankly, my head is already at Liverpool.
"Liverpool sent the offer and the club haven't informed me. Not even about the subsequent Liverpool bids. That wasn't right. I found out about the bid from other people which disappointed me and I realised I've got no business staying at Southampton."