by Associated Press PAOK signs former Portugal defender Costa Associated Press - 28 January 2015 11:08-05:00 THESSALONIKI, Greece (AP) — Greece's PAOK says it has signed former Portugal international Ricardo Costa on an 18-month contract. A team statement says the 33-year-old defender passed medical tests on Wednesday. Costa comes from Qatari club Al-Sailiya SC. His previous teams include Porto and Valencia. Thessaloniki-based PAOK is second in the Greek league, two points behind defending champion Olympiakos. News Topics: Sports, Soccer, Men's soccer, Men's sports People, Places and Companies: Ricardo Costa, Greece, Thessaloniki, Portugal, Porto, Western Europe, Europe Copyright 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.