The 26-year old Germany international, who is being linked with Arsenal, told Fifa.com that England's top flight and the Spanish La Liga are two competitions that he can see himself moving to if he decides to depart the Weserstadion.
"I have another year on my contract with Werder, so we'll have to see what happens," he said.
"Taking a long-term view, the English Premier League is the more appealing option. The Bundesliga has steadily improved in recent years, but England and Spain are still ahead, because that's where you find any number of top clubs.
"I'm not ruling anything out, but it is extremely attractive. Moving abroad brings you on both as a player and a person."