Well maybe they saw that we havent have our 4 strikers healthy at the same time since wehave start the season, maybe they saw that our striker line is geting old, and that our main striker is not delivering what he is supoust to.
Also, maybe they tougth that for the next games we are only with DP and Amauri, and that if you buy a new fordward you will have to pay his transfer, so maybe, just maybe it makes a litle sence to bring a player that you alredy own, instead of buying a new player.
If, there comes the time that all of our strikers are fit, its better to have a youngster who will take the 5th striker spot.