2-7-10: Celtic have made their second signing inside two days after confirming the capture of South Korea international Cha Du-Ri. The German-born defender joins Neil Lennon's side just 24 hours after Charlie Mulgrew's return to Parkhead was secured. Du-Ri spent the past season with Bundesliga outfit Freiburg and was out of contract before sealing a free transfer to Celtic. The 29-year-old has signed a two-year contract and his move will be ratified once a work permit has been granted. Should Du-Ri impress in his first two seasons in the SPL, Celtic have the option of extending his deal by a further 12 months.