Newcastle are favourites while Leeds, Wolves and Middlesbrough are also in the mix.
Allen sealed a £13 million move to Stoke on Monday.
West Ham United's move to the Olympic Stadium continues apace and one of the most important elements is now in place.
David Moyes needs to act quickly in the transfer market this summer.
Jordan Rossiter came off the bench at Ibrox to help Rangers beat Stranraer.
Everton are keen to sign Marko Arnautovic - but his wage demands are a problem.
The Hammers captain feels that hard graft on the training pitch is bringing the team together.
The 24-year-old is delighted with Newcastle United's summer business.
Should Leeds United make a move for the 27-year-old?
Manchester City are reportedly set to beat Manchester United to the signature of Gabriel Jesus.