In many ways, this is good news. At the moment he was behind Abreu and Falcao, meaning that he wouldn't receive too many minutes this coming season. Not only that, but his statistics in River are anything but impressive (7 goals in 36 games). That's just barely a bit more than 3 goals per season.
Perhaps the best part of this whole sale (putting the economic point aside) is that it nearly confirms that Radamel Falcao Garcia will be staying. Just a few days ago the club mentioned that they were going to sell one of the two fowards, but selling both would enfuriate Diego Simeone. Besides, today they rejected a $12,460,000 offer from Deportivo La Coruna, meaning that Aguilar & Co. are in no hurry to sell this time around.
As for possible incorporations, Sebastian Leto continues being the closest option. Rumour has it that he has his arrival details confirmed and would be arriving on loan, yet without a future transfer clause.