Celtic made an approach for Tottenham winger Jack Clarke during the main window.
The Scottish giants tried to lure the 19-year-old on loan from the Premier League giants after previously losing out in the race to sign him in January.
A recruitment source has told Football Insider that Tottenham did not want Clarke being loaned out unless he was going to play regularly.
He had two spells on loan last season, firstly at boyhood club Leeds United and then QPR, and barely played in either of them.
This site revealed yesterday that Spurs put the block on a temporary move this season for the teenager, partly due to fears about his potential playing time and also because they want him to learn his trade at his parent club.
Jose Mourinho and his staff believe the youngster is better off playing for their Under-23s and working towards a first-team breakthrough.