Mourinho has had contact with Dier over the course of the past few weeks, with the two sharing a close relationship since their time together at Spurs.

Roma Shortlist Tottenham Misfit Ahead of January Window

Roma have been offered free agent Jerome Boateng, but they are unlikely to put him under contract and will probably wait until January for a reinforcement, and Eric Dier is high on their wish list. On top of their injury woes, the Giallorossi will not have Evan N’Dicka for a while.
Roma will soon formally announce the arrival of Evan Ndicka, but they won’t stop there as far as their defense is concerned.

Roma Plotting to Make Further Changes to Their Defense

Roma will soon formally announce the arrival of Evan Ndicka, but they won’t stop there as far as their defense is concerned. The club is looking for suitors for Roger Ibanez and is eyeing a pair of possible additions. Director Tiago Pinto will spend some time in London.
Roma are putting the finishing touches on their agreement with Evan Ndicka, but Milan made a late attempt to turn the tables.

Milan Interfere with Roma Advanced Pursuit of Ndicka

Roma are putting the finishing touches on their agreement with Evan Ndicka, but Milan made a late attempt to turn the tables. Eintracht Frankfurt formalized Wednesday that the defender wouldn’t renew his expiring contract and leave as a free agent. The Giallorossi are ironing out a five-year deal.
Roma took a flier on Diego Llorente in January, and the defender responded well when called upon lately. The Giallorossi would be happy to keep him,

Roma Keen on Retaining Leeds Defender for Lower Fee

Roma took a flier on Diego Llorente in January, and the defender responded well when called upon lately. The Giallorossi would be happy to keep him, but not at the numbers originally negotiated with Leeds United. They hold an €18M option to buy. The center-back supplanted Roger Ibanez in recent matches.