Napoli sign Croatia midfielder Marko Rog on loan from Dinamo Zagreb

NAPLES, Italy -- Napoli have signed Croatia midfielder Marko Rog on loan from Dinamo Zagreb.

Napoli President Aurelio De Laurentiis tweeted Monday that Rog is "a signing which enhances a midfield which is now among the most complete possible."

The 21-year-old Rog has appeared four times for Croatia, including against Spain in the European Championship.

He played a key role in getting Dinamo into the Champions League group stage, with three goals in six matches in the qualifying phase.

Reports say Napoli paid €1.5 million ($1.7 million) for the loan, with the obligation to buy the player at the end of the season for €12.5m ($14 million).