Ange Postecoglou 's eleventh capture of the summer window and a second of the day following confirmation Giorgos Giakoumakis had signed from Venlo.
A Portuguese youth international, he's spent time on-loan with Real Vallodolid in La Liga last season but has not featured as part of boss Jorge Jesus' plans since returning.
A report in his homeland on Sunday indicated Celtic would need to stump up €7.5million (£6.4m) if they want to make the transfer permanent next summer. Get all the latest Celtic news sent straight to your Inbox every day by signing up to our newsletter.We cover every morsel of information regarding your favourite club in the form of articles, videos and podcasts.The newsletter will arrive every day at 12pm, giving you a.
Read more on dailyrecord.co.uk