Chuba Akpom has failed to break into Arsene Wenger's first-team and has been surpassed by 18-year-old Eddie Nketiah in the striker pecking order.
Arsenal have reached an agreement in principle with Borussia Dortmund for the transfer of Aubameyang, but the German club's search for a replacement is delaying the deal.
Henrikh Mkhitaryan completed a move to north London in a swap deal which saw Alexis Sanchez go the other way to Manchester United.
Sanchez, 29, joined the Red Devils on a four-and-a-half-year contract from the Gunners earlier this month.
Monaco vice-president Vadim Vasilyev has warned Liverpool and Arsenal that Thomas Lemar will not be leaving the French club this month.
Keita has been rather productive for Monaco since joining from Lazio in the summer, scoring six goals and providing a further five assists in all competitions.
According to reports, Arsenal are closing in on a £60m deal for the Borussia Dortmund striker.
A hamstring injury suffered in West Bromwich Albion's 3-2 win over Liverpool could halt a potential move to Arsenal for Jonny Evans.
Borussia Dortmund chief Michael Zorc has warned Arsenal to meet their demands or risk missing out on Pierre-Emerick Aubameyang.
The Gunners have been holding discussions with the Baggies over Evans and are keen to add the defender to their ranks to bolster their backline.
Reports that Arsenal have offered £10m plus right-back Mathieu Debuchy to West Brom for captain Jonny Evans are not true, according to Baggies boss Alan Pardew.
Arsene Wenger will allow Olivier Giroud to leave Arsenal this month if the club can sign a replacement.
Aubameyang will be part of the Dortmund squad for their game against Freiburg on Saturday (27 January) after Arsenal and Dortmund fail to agree fee.
David Ospina has urged Arsenal to move on from the loss of Alexis Sanchez after the Gunners beat Chelsea in the Carabao Cup semi-final second leg.
Corinthians midfielder Maycon is being lined up by Arsenal for a move in the summer after he impressed the club's scouts.
Arsenal are keen to sign Aubameyang before the end of the transfer window but will have to meet Dortmund's valuation said to be around £55m.
Head coach Peter Stoger has not ruled out the possibility of Arsenal target Pierre-Emerick Aubameyang returning to the Borussia Dortmund squad for Saturday's visit of Freiburg.
Arsene Wenger has claimed that Arsenal are "strong enough" even if they fail to sign Pierre-Emerick Aubameyang from Borussia Dortmund this month.
Ian Wright believes Arsenal are still capable of finishing in a top-four position, provided Henrikh Mkhitaryan and other potential signings all make an instant impact.
Eintracht Frankfurt manager Niko Kovac has slammed Pierre-Emerick Aubameyang's behaviour as the striker edges closer to a move to Arsenal.
Arsenal are hopeful of concluding a deal for Pierre-Emerick Aubameyang in the coming days after improving their offer.
Sanchez, 29, joined United on a four-and-a-half-year contract, with Henrikh Mkhitaryan moving in the opposite direction.