Pohjanpalo is HJK's player. He's on loan in Leverkusen, and they have loaned him to Fortuna Düsseldorf for the next two seasons.
Last season he was also on loan at Leverkusen, and the loaned him to Aalen, where he scored five goals but was easily the club's best player (I saw almost each of Aalen's matches). Not bad to be easily the best player in a 2nd Bundesliga club at 19 years old... He's also very close to being a starting player for Finland. Probably the most highly rated Finnish striker since Mikael Forssell.
Obviously won't be coming to Brighton any time soon, even though Hyypiä played some part in the Leverkusen deal. Maybe in the future, but I hope he'll be in Bundesliga in one year.