LONDON, Jan. 2 (Xinhua) -- German Bundesliga side Hoffenheim loaned Icelandic striker Gylfi Sigurdsson to English Premier League side Swansea on Monday and announced they had signed young German defender Stefan Thesker.

Sigurdsson, 22, had played for English club Reading before joining Hoffenheim last year.

The 20-year-old Thesker joined the German side under a two-and-a-half year contract from Dutch side FC Twente.