The share lost in excess of 4% Monday and is on track to closing almost 6% lower today, hovering around 104 euros per share.

The plunge comes as the negotiations with Cinven enter what the Slovenian Sovereign Holding (SSH) said was "the final stage".

Business daily Finance reports the final decision could be made as early as this week, pending approval from the government as the sole shareholder of the SSH.

Unofficial information obtained by Finance suggests Cinven originally offered 85 euros per share (EUR 95 if Telekom did not pay out dividends) plus 15 as a conditional payment.

The conditional payment would depend on the outcome of ongoing damages suits and two procedures Telekom currently faces at the Competition Protection Agency.

The Cinven proposal involves the state guaranteeing for any damages in excess of EUR 150m, Finance reports.

Telekom has about EUR 300m in outstanding damage claims and provisions of roughly EUR 50m to this end.

While the Cinven proposal is far below the EUR 130 per share that the SSH has reportedly been aiming for, Finance says the two sides are now close to meeting halfway - at EUR 115 per share total.