Arsenal, Liverpool and Borussia Dortmund are involved in a three-way fight for Olympiacos striking sensation Kostas Mitroglou. The Greece international, 25, has banged in 14 goals in 14 games to catch the attention of Europe's big boys. Arsenal need to reinforce their striking ranks and Arsene Wenger has plenty of cash to spend in January. Mitroglou would cost them at least £7m but the striker's goal-getting could spark a bidding war. He's already hit THREE hat-tricks this season and has helped his country to a World Cup play-off with Romania. But Liverpool and Dortmund are keeping an eye on Mitroglou too, according to sources on the continent. The Reds will be short on firepower if either Luis Suarez or Daniel Sturridge get injured and Mitroglou's experience in the Champions League will appeal to Brendan Rodgers. Dortmund, meanwhile, have conceded Polish ace Robert Lewandowski is on his way out and are on the lookout for replacements. Mitroglou has experience playing in Germany before during a spell at Borussia Monchengladbach. While playing there he shone in the European Under-19 Championships to earn himself a move to Olympiacaos.