Newcastle were understood to be considering bringing Andy Carroll back to the club after earlier announcing the signing of defender Emil Krafth on transfer deadline day.
Carroll, a free agent following his release by West Ham at the end of last season, scored 31 goals in 80 league appearances for the Magpies, his home town club, before joining Liverpool in 2011.
The 30-year-old striker has suffered considerably with injuries during his career and PA understands Newcastle have been examining his medical records closely as they weigh up their options.
Sweden right-back Krafth, 25, has arrived at St James' Park from Amiens, putting pen to paper on a four-year deal.
Other done deals confirmed by Premier League clubs on deadline day are West Ham signing Switzerland striker Albian Ajeti, 22, from Basel, and Brighton recruiting 19-year-old French right-back Romaric Yapi from Paris St Germain, with the youngster initially to link up with the Seagulls' under-23 squad.
Watford made their first move of deadline day with the signing of Rennes winger Ismaila Sarr with less than two hours to go before the deadline.
Meanwhile, Romelu Lukaku looked to be nearing completion of a move from Manchester United to Inter Milan, with a fee of 80million euros (£73.7m) understood to have been agreed between the clubs.
Charlton confirmed West Brom pair Sam Field and Jonathan Leko had joined them on loan, and Brentford signed defender Dominic Thompson from Arsenal.
Australia midfielder Massimo Luongo joined Sheffield Wednesday from QPR, and Hungary midfielder Adam Nagy moved from Bologna to Bristol City.
It was understood Arsenal forward Eddie Nketiah – who the Robins had been interested in – was expected to join Leeds on loan for the season.
The Elland Road club announced they had signed France Under-20 goalkeeper Illan Meslier on a season-long loan from Lorient.