Former Chelsea midfielder Michael Ballack has rejoined former club Bayer Leverkusen on a two-year contract.
The 33-year-old Germany international was handed a free transfer at the end of last season after failing to agree a new contract with the Stamford Bridge club.
Ballack, who picked up an ankle injury in May's FA Cup final which prevented him from playing in the World Cup finals, was believed to be holding out for a two-year deal but the Blues were only offering a 12-month extension.
The midfielder has now returned to the Bundesliga with the club he helped reach a Champions League final in 2002, before leaving to join Bayern Munich.
"With my transfer to Bayer Leverkusen a circle is complete. I had a beautiful and successful time here on which I like to look back on a lot," he told the club's official website.
"That was a factor in my decision. But above all the good sporting potential of this young and attractive team were persuasive.
"I am especially looking forward to the great fans, who naturally have been key in my decision to return to Bayer."
Meanwhile, Bayer sporting director Rudi Voller is delighted that Ballack chose his club ahead of a host of other suitors.
"With Michael Ballack our team is getting an enormous boost in quality," he said.
"That his preference was for Bayer despite our limited financial possibilities in comparison to the competition shows his emotional attachment to the club."