* Abraham signs deal to 2016 * Defender Compper sent to the reserves (Updates with Compper sent to reserves) BERLIN, Jan 22 (Reuters) - Relegation-threatened Hoffenheim have signed Argentine defender David Abraham from Spain's Getafe in a deal to 2016 and have sent Marvin Compper to the reserves as they try to recover from their worst first half of a Bundesliga season. The tall, 26-year-old Abraham won three Swiss league titles and two Swiss Cups with FC Basel before joining the Spanish team last year. He also played in the Champions League with the Swiss club. ... More...