The race for Celtic defender Kristoffer Ajer is expanding.

Mundo Deportivo says Real Madrid are assessing whether to make a surprise summer move for Ajer following his impressive showings in the Scottish Premiership this term.

The Celtic star has been an integral part of a defence which has just helped the club win its ninth top-flight crown in succession.

The Spanish giants however could face a tough battle for the 22-year-old's signature with Paris Saint-Germain, Manchester City and Leicester City also showing interest.

Madrid are looking for a long term replacement for Sergio Ramos whose contract expires next summer as the 34-year-old approaches the end of his career.

Dayot Upamecano of RB Leipzig remains a priority target but Ajer could provide a more tempting prospect at a significantly smaller transfer fee.