Arsenal will push to sign Jerome Boateng on loan from Bayern Munich before launching a £50m summer raid for RB Leipzig centre-back Dayot Upamecano.
Mikel Arteta is keen to bolster his defensive options with Calum Chambers injured for the rest of the campaign.
Boateng has struggled for first-team football at the Allianz Arena this season and is viewed as a solid temporary fix by the Gunners.
The 31-year-old has been capped 76 times for Germany and already has Premier League experience following a 12-month stay at Manchester City earlier in his career.
The Bayern ace is only being considered as a short-term option, though.
Arteta is ready to go all out for Upamecano once the season is over.
The 21-year-old is a rising star in the Bundesliga having moved to Leipzig from Red Bull Salzburg in January 2017.
Arsenal made enquiries about his availability in August, but left it too late to get a deal done.
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The north Londoners are determined to pair Upamecano with his compatriot, William Saliba, who is currently at St-Etienne on loan.
Senior figures at the club believe the French duo can form a formidable partnership and are the long-term solution to the club’s defensive woes.
Arsenal once again failed to keep a clean sheet on Saturday.
Sheffield United secured a 1-1 draw at the Emirates as Arteta’s revolution stalls.
"I'm very disappointed, the performance deserved three points,” he said after the match.
“It is two points lost but if you don't put games to bed in the last 10 minutes that can happen.
“There is a history of that - 1-0 up is never enough, be careful as anything can happen.
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"They tried to do their best before. I inherited a team in a difficult situation.
“In the second half they [Sheffield United] didn't create much apart from the goal, a long ball and someone from an incredible angle puts it in the top corner.
"They all went full gas, the players tried really hard. We didn't allow them to create the overloads in wide areas apart from the first five or 10 minutes.
“I think it's a very clear penalty for us [on Nicolas Pepe]."