Sunderland have offered Will Grigg in a part-exchange bid for Shrewsbury Town midfielder Ollie Norburn, Football Insider can reveal.

The striker has made little impact at the Stadium of Light since his £3million arrival from Wigan Athletic last January and Phil Parkinson is willing to let him go.

A Sunderland source has told Football Insider that the club are trying to use Grigg as bait for Norburn, who is one of their leading targets in the final week of the window.

The north-east club have held discussions with Shrewsbury over a deal for Norburn but have been unable to agree a fee.

Grigg has slipped down the pecking order in Parkinson’s team and has not featured since mid-December.

Sunderland signed ex-Rangers striker Kyle Lafferty this month and he made his debut in the 0-0 draw against Doncaster Rovers last weekend.

The Black Cats are eager for reinforcements to boost their promotion challenge and Parkinson has admitted to making moves for Norburn as well as Greg Docherty.

As revealed by Football Insider, a new offer has gone in for the Rangers man after their pursuit had appeared to stall.

Sunderland are also eager for a breakthrough in their pursuit of Norburn, who is regarded as one of the best midfielders outside of the top two divisions.

Grigg has scored just three goals from 26 appearances for Sunderland this season and eight from 48 games since his arrival 12 months ago.

In other Sunderland news, it can be REVEALED that a striker is undergoing medical today after six-figure bid accepted.