Bundesliga side Hamburg say they will need to go their financial limits if they want to fight off interest from England's Premier League and keep hot-shot South Korea striker Son Heung-Min.
Arsenal and Tottenham Hotspur are both reported to be interested in signing the talented Korean, who scored a superb goal in Hamburg's 3-2 north German derby win over Werder Bremen on Sunday.
Hamburg's director of sport, Frank Arnesen, has said he will need to substantially raise the 20-year-old Korean's contract if they want to stop him being lured to England.
"He's a great talent, therefore I don't have a problem with the fact we'll have to pay him accordingly," said Arnesen. "I am sure we can satisfy him financially, but we have our limits."
Son's contract expires in 2014 and Hamburg, who are ninth in the Bundesliga, are eager to extended his deal sooner rather than later to prevent losing him on a free transfer in 18 months.
Having joined as a teenager from FC Seoul in 2009, Son, who has seven goals in 18 games this season, is one of a handful of South Korean stars plying their trade in the Bundesliga.
Ji Dong-Won is on loan at strugglers Augsburg until the end of the season from Premier League side Sunderland, where he has joined up with compatriot Ja-Cheol Koo after the pair won bronze medals at the 2012 London Olympics.