The World Cup winner has been an undisputed first-choice under both Rafa Benitez and Zinedine Zidane this season, forging an effective partnership with Luka Modric.
Signed from Bayern Munich in 2014, Kroos has become an integral part of this Madrid side, however, he has struggled to replicate the form he showed in his native Germany.
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Nevertheless, a player of his undoubted class should not be undermined and if the hierarchy at the Bernabeu have any sense at all, they will do all they can to hold on to one of world football's finest.
The complete midfielder
Kroos to put it simply is one of the most complete midfielders in the modern game. A combative technician with the ability to tear teams apart as a deep-lying playmaker and set the tempo for his team in the middle of the park.
Offensively he is also an entity which is feared throughout Europe, his accurate shooting from distance one of the prime attributes in establishing this formidable reputation.
Sadly, a hefty percentage of his career in Spain has been spent focusing on the defensive side of his game, operating in a holding midfield role at times. While he is certainly not an inept performer in this position it most certainly isn't his forte and Madrid should be seeking a role for his talents to flourish.
In recent weeks, Casemiro has been utilised as the holding midfielder, giving Kroos more freedom to exert his obvious talents and as a result, he has produced some impressive performances.
If Zidane can tailor his team to suit the needs of the German then it will no doubt pay dividends for him and Madrid's midfield.
Midfield stability key to Madrid progress
With Gareth Bale, Karim Benzema and Cristiano Ronaldo fully focused on providing spectacular offensive output, the onus is on the midfield to help stabilise this exciting team.
The forward-thinking playmaking position at Madrid may soon become redundant, much like it has at Barcelona, to allow a front three of this calibre to thrive and have the rest of the side provide the necessary pragmatic input.
Kroos is central to this theory succeeding at the Bernabeu. He and Modric are the perfect platform for Madrid's attacking trio to thrive and also get the required defensive assurance.
The only transfer consideration concerning transfer business in the midfield area should be strengthening the holding midfield role. Casemiro has deputised admirably but a club of Madrid's calibre can most certainly acquire an improvement.
On the subject of Kroos however, the only discussion should be 'do not sell'. Getting rid of a world-class 26-year-old is bordering on ridiculous and it is a mistake which no team can afford to make. To put it simply, help him settle!
Should Real Madrid consider selling Toni Kroos? Have YOUR say in the comment box below!