26 year-old Thomas has spent time at various league and non-league clubs during his early career, and can play down the middle or out on the flank.
The deal is with the option of a longer contract extension over the summer with the Millers paying what is understood to be a nominal fee for his services until then.
“Wes is an excellent signing and I thank our Chairman for his continued support,” boss Steve Evans told themillers.co.uk.
“The lad had several options but he has decided to join us and we are all delighted. Our talks will continue into Wes being here for much longer than the summer but at least he is here until the end of the season.
"The fact that the lad wanted to join us straight away and allow his representatives to continue talking to us is a great sign.”
MillersMAD wish Wes all the best with the club.
Players career stats:
| Recent career history by club (1999 onwards) | |||||
|---|---|---|---|---|---|
| Team | Debut | Apps (+ sub) | Goals | Yellows | Reds |
| AFC Bournemouth | 03 Aug 2013 | 1 (9) | 0 | 0 | 0 |
| Birmingham City | 02 Feb 2013 | 5 (6) | 3 | 0 | 0 |
| AFC Bournemouth | 12 Jan 2013 | 2 (1) | 0 | 1 | 0 |
| Blackpool | 24 Nov 2012 | 7 (2) | 3 | 0 | 0 |
| AFC Bournemouth | 10 Nov 2012 | 0 (1) | 0 | 0 | 0 |
| Portsmouth | 29 Sep 2012 | 7 (0) | 3 | 1 | 0 |
| AFC Bournemouth | 10 Sep 2011 | 41 (1) | 11 | 2 | 0 |
| Crawley Town | 06 Aug 2011 | 2 (6) | 1 | 1 | 0 |
| Cheltenham Town | 07 Aug 2010 | 40 (3) | 19 | 4 | 0 |
| Dagenham & Redbridge | 17 Feb 2009 | 6 (23) | 3 | 1 | 1 |
| Grays Athletic | 06 Dec 2008 | 8 (0) | 2 | 0 | 0 |
| Dagenham & Redbridge | 04 Oct 2008 | 0 (2) | 0 | 0 | 0 |
| Fisher Athletic | 03 May 2008 | 1 (0) | 0 | 0 | 0 |
| Recent career history by season (1999 onwards) | |||||
|---|---|---|---|---|---|
| Season | First App. | Apps (+ sub) | Goals | Yellows | Reds |
| 2013/2014 | 03 Aug 2013 | 1 (9) | 0 | 0 | 0 |
| 2012/2013 | 14 Aug 2012 | 24 (11) | 9 | 2 | 0 |
| 2011/2012 | 06 Aug 2011 | 40 (6) | 12 | 3 | 0 |
| 2010/2011 | 07 Aug 2010 | 40 (3) | 19 | 4 | 0 |
| 2009/2010 | 08 Aug 2009 | 5 (21) | 3 | 1 | 1 |
| 2008/2009 | 04 Oct 2008 | 9 (4) | 2 | 0 | 0 |
| 2007/2008 | 03 May 2008 | 1 (0) | 0 | 0 | 0 |
Total appearances 120 (+ 54 as sub); Goals 45; Yellow cards 10; Red cards 1