Arsenal boss Arsene Wenger believes midfielder Denilson can develop into a top player - if he plays regularly.
"It's always difficult to assess at the start of the season how good Denilson will be," said Wenger. "But they can only develop if they play.
"It's a tricky situation, but we not only make results but we develop players as well. People want to see big names, but they also want to see good players."