He scored his only goal of the season following his return to from South Africa, a strike on August 9 in a 3–2 victory over Chicago. Thanks in part to his international duties, Clark only made 22 appearances in league play. He also saw his playing time in the CONCACAF Champions League decrease, appearing in two of the Dynamo's six games in the competition. Clark did play every minute in the MLS Cup Playoffs, including going 120 minutes against LA Galaxy in the conference finals on November 13. Houston was defeated 2–0 after extra time, and with Clark's contract expiring at the end of the season it would mark his final match of his first stint with the club. He announced following the season that he would pursue opportunities abroad, departing Houston with eight goals in 129 appearances across four seasons with the Dynamo. During the summer of 2009, following his performance at the Confederations Cup, Clark had received interest from multiple European clubs. Stade Rennais of Ligue 1 and newly-promoted Serie A club Livorno both reported interest in the player, either to sign him during the summer window or once his contract with MLS expired in January. Both moves fell through, leaving Clark with Houston through the end of the season. Eintracht Frankfurt Clark, whose contract with MLS expired at the end of the 2009 season, signed a deal with Bundesliga club Eintracht Frankfurt for the remainder of the 2009–10 season with an option to extend the contract at the end of the season. He made his club debut on April 24, 2010, against Mainz 05, playing the full 90 minutes in a 3–3 draw. Clark started each of the last three matches on the season for Eintracht as the club finished 10th in the league. Prior to the season finale against VfL Wolfsburg, and despite the injury he had suffered after arriving in Germany, Clark inked a three-year contract with Frankfurt. As Eintracht struggled towards relegation in 2010–11, Clark also struggled to become a mainstay in the starting lineup for the club. He made his season debut in a 4–0 victory over Borussia Mönchengladbach in early September, replacing Pirmin Schwegler in the 89th minute. Clark appeared in four of Eintracht's nine victories on the season, and six of their 16 total results, but could not prevent the club from slumping to 17th place and just the fourth relegation