Lovren signed for £20 million in 2014 from Southampton.
The new Leeds United owner admits he is yet to forge a solid business relationship with the Whites' owner.
Allardyce left the Stadium of Light to become England manager last week.
Newcastle United are set to take on Vitesse Arnhem at the weekend in a pre-season friendly.
The Gunners have made just one major signing this summer.
The two young Tottenham defenders had a tough evening against a Juventus side with many of their attacking talents starting.
Leeds United will be hoping to tie down the midfielder to a new long-term contract.
Everton beat MK Dons 3-1 yesterday in a pre-season friendly.
Mannone enjoys the competition from understudy Jordan Pickford for the number one spot.
The teenager starred during a 25-minute cameo performance in the win over Cambridge United on Saturday.