Why Carl Starfelt looks like an absolute bargain for Celtic - 67 Hail Hail

How has Carl Starfelt landed at Celtic for a reported £4m, after signing a deal earlier this year, and with 3 caps to his name?

Why Carl Starfelt looks like an absolute bargain for Celtic - 67 Hail Hail
How has Carl Starfelt landed at Celtic for a reported £4m, after signing a deal earlier this year, and with 3 caps to his name?