Aleksandar Mitrovic scored form the spot in Newcastle United's 3-3 draw with Manchester United.
Grujic watched on from the stands as Liverpool drew 3-3 with Arsenal in the Premier League.
Forster returned from a 10-month lay-off in a 2-0 win over Watford.
Celtic have been linked with a number of players this month.
Influential midfielder Barry Bannan has signed a new deal at Sheffield Wednesday.
The youngster is set to stay at St Andrew's until 2019.
The 17-year-old will not feature for Leeds United against Manchester City in the academy competition.
Jack Hunt left Crystal Palace to sign permanently for Sheffield Wednesday.
The Tunisian has not played a single game for the club.
Christian Eriksen has scored just four goals for Tottenham Hotspur so far this season.
The Liverpool star has named Lionel Messi, Luis Suarez and Neymar as the world's top three players.
Part of an overhaul that sees the bank focusing more on wealth management.
West Ham United and Arsenal will face each other in the Premier League this weekend.
Football fans have not held back on Twitter after West Ham United striker Simone Zaza swapped shirts with Manchester United star Zlatan Ibrahimovic.
Tottenham Hotspur are reportedly keeping tabs on Celtic striker Moussa Dembele.
Mark Warburton’s Glasgow Rangers will face Old Firm rivals Celtic at Ibrox in the Scottish Premiership later this month.
A banker who attacked his wife with an axe and knife more than 120 times after she asked for a divorce has been sentenced to life in prison.
Mark Warburton's Rangers are without Niko Kranjcar for the rest of the campaign - could Fabbrini replace him at Ibrox?
Former manager says he is surprised Southampton faced so little opposition for Celtic defender.
Everton and Manchester United will face each other in the Premier League this weekend.
Egyptian midfielder's Arsenal move is done.
A selection of the latest stories involving Liverpool Football Club this Thursday morning.
BNP Paribas will outsource its Asian equities trading platform to global electronic brokerage Instinet to save costs as part of a broader overhaul of its regional cash equities business, both companies told Reuters.