Harper is currently starring for Malaga in Spain, and Celtic need a striker.
Rangers desperately need another striker in the January transfer window.
West Ham United did not feel Sead Haksabanovic was ready for the Premier League and he is now struggling in Spain with Malaga.
Sead Haksabanovic impressed for Premier League outfit West Ham United in pre-season but Manuel Pellegrini sent him to Malaga
Spanish striker Sandro Ramirez is back at Everton after spending the latter half of last season on loan with Sevilla.
Mario Husillos is expected to be announced as West Ham's new transfer chief.
Diego Rolan had his heart set on a move to the Premier League and Newcastle United last summer but instead signed for La Liga outfit Malaga.
Nottingham Forest need a goalkeeper and Everton's seldom-seen shot-stopper Joel Robles is on the Championship side's radar.
Roque Mesa has only started one Premier League game for Swansea City and could now return to La Liga.
Eduardo Herrera has struggled at Ibrox since joining Rangers in the summer from Pumas.
Spurs are heading to M11 on Saturday as Mauricio Pochettino seeks to deliver an early blow to Tottenham's Premier League rivals.
The Rangers manager Steven Gerrard added the midfielder to his Ibrox ranks on Thursday.
Ben White joined Leeds United on loan from Brighton and Hove Albion in the summer transfer window.
Arsenal new boys are in contention to start.
The Tottenham Hotspur defender has only recently returned to full first-team training.
Kevin Mirallas isn't going to be playing Premier League football for Marco Silva's Everton any time soon - will he return to Belgium?
The Sky Sports pundit believes there could be issues at Tottenham Hotspur.
Steven Gerrard’s Glasgow Rangers won against FC Midtjylland at Ibrox on Thursday.
Anyone else reminded of Cobb's totem spinning... anyone?
Tottenham star is in contention to face Manchester City.
Real Madrid’s fans gathered at the fountain of Cibeles, celebrating before their team had even finished playing at Rosaleda.
The Spaniard was a free transfer just last summer after being released by Barcelona.
Barcelona’s fate was in their own hands, which as it turned out was the worst place it could possibly be. Saturday’s story was the story of the season in Spain: everything changed to stay the same, the table remaining unmoved.