If hes half as successful as Julian has been. He'll be another feather in txiki's cap.
Seems an unusually short contract though, 3.5 years once he arrives here, unlikely to feature in that first 6 months and he's then down to 3 years. I know we tend to reward players with extensions early but even so, for a teenager that's coming in for the potential he brings, it just seems weirdly short.