Attacking midfielder - Martin Odegaard (€40 million)
Martin Odegaard arrived at Arsenal on a loan deal with a lot of fanfare after struggling for game time at Real Madrid.
Despite playing only five times for his new side, the on-loan player seems to have impressed enough to merit a permanent move to the Premier League side.
Odegaard is yet to score a goal or assist one for the Gunners, but Arsenal head coach Mikel Arteta is all praise for the on-loan player, saying:
"He is a young leader. On the pitch he is showing a lot of character and a lot of intelligence. They are characteristics that a leader should have. He has been here a very short time, but he has adapted very quickly. He is getting more and more respect from the players and the staff and his weight on the team will increase with every week."
Forward - Moussa Dembele (€30 million)
Signed on loan from Lyon in January this year, Moussa Dembele has only played one game for La Liga leaders Atletico Madrid.
However, the Frenchman has been in impressive goal-scoring form, netting 31 cumulative goals in his last two Ligue 1 campaigns.
Dembele has only joined Atletico for the rest of the season. However, the Rojiblancos could make the move permanent by shelling out around €35 million for his services if he makes a good impression.
Forward - Alvaro Morata (€50 million)
Alvaro Morata has had a prolific second homecoming at Juventus since arriving at the Serie A giants on loan at the start of the season.
The Spanish striker has scored 13 goals in all competitions for the Bianconeri, doing so in four different competitions.
Andrea Pirlo was pleased about the impact of Morata, saying in this regard:
"Morata arrived very young at Juventus, and he returned from his experiences in Madrid and London a more mature person and player. He feels happy and free of pressure, so that helps anyone give their best. We wanted him at all costs, and are very happy to have him."