Kristiyan Malinov
The CSKA Sofia midfielder is reported to be available for around €2m (£1.8m) this summer and would be a cheaper alternative to Zungu, who would cost double that amount.
Malinov doesn’t have the experience of playing in a big European league but he has attracted the attention of scouts from a number of different clubs. His agent has confirmed Rangers have held talks, while the likes of Celta Vigo, Vitesse Arnhem, VVV Venlo, K.V. Mechelen and Standard Liege are also said to be keen.